Monitoring database storage over-committing with OEM extention metric when using autoextend datafiles

Hi all,

Working on a project, I was asked to stop using autoextend on the database file, while setting up a new environment on a client, to avoid ASM diskgroup space issues.

In case the free space was not enough to handle all datafiles growth when often people would add datafiles in autoextend without checking the complete database e storage, which could cause a bigger problem.

I really like the autoextend, as it can prevent processes from failing and even more. Instead of be wasting space as often, in multiple tablespace environment, as the tablespace grows differently and as I mention not all validations are often done when adding space. We just want to resolve the issue and move to the next one.

So how can we save space by using it on where is needed and not being at risk of over-committing the storage use?

The idea is to monitor the database possible growth and compare with the current free space in the ASM diskgroup being used by the database.

So to accomplish that, I used column MAXBYTES in dba_data_files and dba_temp_files. In the example below we can see the current size from the BYTES column and the MAXBYTES as the limit to which the file can grow to be.  If the MAXBYTES is 0 the file does not have autoextend on.

SYS@db011>select TABLESPACE_NAME,FILE_NAME,BYTES,MAXBYTES from dba_data_files where TABLESPACE_NAME like 'SYS%' or TABLESPACE_NAME='UNDOTBS1';

TABLESPACE_NAME FILE_NAME BYTES MAXBYTES
------------------------------ -------------------------------------------------------------------------- ---------- ------------
SYSTEM +ORA_DATA/db01/datafile/system.264.1032015007 2147483648 32212254720
SYSAUX +ORA_DATA/db01/datafile/sysaux.319.1032015009 2751463424 32212254720
UNDOTBS1 +ORA_DATA/db01/datafile/undotbs1.320.103201500 4294967296 0

So, to gather the max database size, I summed the greatest value between BYTES and MAXBYTES (when available) and using the v$asm_diskgroup to grab the current avaliable space from the diskgroup used in the db_create_file_dest parameter and finally subtracting the available space from the max database size:

select dg.FREE_MB - round((dbf.max+tempf.max),0) as total_free
from
(select trunc(sum(greatest(maxbytes,bytes)/1024/1024)) as max
from dba_data_files ) dbf,
(select trunc(sum(greatest(maxbytes,bytes)/1024/1024)) as max
from dba_temp_files) tempf,
(select FREE_MB
from v$asm_diskgroup where name in (select LTRIM( value, '+' ) from v$parameter where name='db_create_file_dest')) dg;

Based on this we can create several ways to avoid the storage over-committing.

The one I used was to create a metric extension:

If the value of the above query is negative, means that the max database size is greater than the available size therefore the capacity plan for that database must be reviewed.

  1. To create the metric extension, go to, on the OEM menu  – Enterprise -> Monitoring -> Metric Extension > Actions -> Create -> Metric Extension.
  2. In the General Properties page select the target type as Cluster database if it´s RAC or Database instance.
  3. In the Adapter, select “SQL”
  4. In Collection schedule, enable the metric, upload the data and set the collection frequently to your environment needs.
  5. In the Adapter page add the above query.
  6. In the Columns page, add a column for the result of the query.
    1. To fit my environment I only set the critical alert and in case the value of the metric is below 0.
  7. Continue filling the necessary information on the next pages, as well as test the new metric on a selected target, Afterwards save the new metric.
  8. Prior to deploying it to any target you need save the metric as a deployable draft, select the created metric and go the action menu and select Save as Deployable draft

Now you can deploy the new metric to the targets.

Hope this can help!

Elisson Almeida

OEM 12c Agent: java.lang.OutOfMemoryError: Java heap space

Hi all,

So I got this error from OEM in a client. When connecting noticed OEM agent was down.

From logs, it failed to restart because of error “java.lang.OutOfMemoryError: Java heap space“.

I tried to run clearstate but got same error.

Searched on MOS – found MOS Duplicate 1952593.1: EM12c: emctl start agent Fails With Target Interaction Manager failed at Startup java.lang.OutOfMemoryError: Java heap space reported in gcagent_errors.log (Doc ID 1902124.1)

Solution seems to be moving /agent_inst/sysman/emd/state/ content to another location before running clearstate.

After doing so, all worked fine! So if you are facing the same, try this out!

oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/bin$ ./emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent is Not Running
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/bin$ cd ..
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst$ cd sysman
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman$ cd log/
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ ls -lrt | tail
-rw-r----- 1 oracle dba 4096 Jan 9 09:47 emagent.nohup.lr
-rw-r----- 1 oracle dba 11165 Jan 9 09:48 startup.info
-rw-r----- 1 oracle dba 153432 Jan 9 09:48 gcagent_errors.log
-rw------- 1 oracle dba 540010788 Jan 9 09:48 heapDump_7.hprof
-rw-r----- 1 oracle dba 4687452 Jan 9 09:48 gcagent.log
-rw-r----- 1 oracle dba 1746 Jan 9 09:48 agabend.log
-rw-r----- 1 oracle dba 2863 Jan 9 09:48 gcagent_pfu.log
-rw-r----- 1 oracle dba 84308 Jan 9 09:48 emagent.nohup
-rw-r----- 1 oracle dba 762142 Jan 9 10:06 emdctlj.log
-rw-r----- 1 oracle dba 121782 Jan 9 10:06 emctl.log
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ date
Monday, January 9, 2020 10:06:24 AM PST
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ tail gcagent.log
2020-01-09 09:48:50,875 [32:F9C26A76] INFO - *jetty*: Graceful shutdown SslSelectChannelConnector@0.0.0.0:3872
2020-01-09 09:48:50,877 [32:F9C26A76] INFO - *jetty*: Graceful shutdown ContextHandler@63b5a40a@63b5a40a/emd/lifecycle/main,null
2020-01-09 09:48:50,877 [32:F9C26A76] INFO - *jetty*: Graceful shutdown HTTPLifecycleHandler@7284aa02
2020-01-09 09:48:50,877 [32:F9C26A76] INFO - *jetty*: Graceful shutdown ContextHandler@5dac13d7@5dac13d7/emd/main,null
2020-01-09 09:48:50,877 [32:F9C26A76] INFO - *jetty*: Graceful shutdown HTTPRequestHandler@52a34783
2020-01-09 09:48:50,877 [32:F9C26A76] INFO - *jetty*: Graceful shutdown ServletContextHandler@201d592a@201d592a/emd/browser,null
2020-01-09 09:48:50,878 [32:F9C26A76] INFO - *jetty*: Graceful shutdown ContextHandler@19a9bea3@19a9bea3/emd/persistence/main,null
2020-01-09 09:48:50,878 [32:F9C26A76] INFO - *jetty*: Graceful shutdown HTTPAgentPersistenceHandler@3d89acb5
2020-01-09 09:48:50,878 [32:F9C26A76] INFO - *jetty*: Graceful shutdown ContextHandler@5722cc7e@5722cc7e/,null
2020-01-09 09:48:53,932 [32:F9C26A76] INFO - *jetty*: Shutdown hook complete
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ tail gcagent_errors.log
at oracle.sysman.gcagent.target.interaction.execution.Threshold.initThreshold(Threshold.java:4132)
at oracle.sysman.gcagent.target.interaction.execution.TargetInteractionMgr.init(TargetInteractionMgr.java:225)
at oracle.sysman.gcagent.target.interaction.execution.TargetInteractionMgr.tmNotifier(TargetInteractionMgr.java:171)
at oracle.sysman.gcagent.tmmain.lifecycle.TMComponentSvc.invokeNotifier(TMComponentSvc.java:998)
at oracle.sysman.gcagent.tmmain.lifecycle.TMComponentSvc.invokeInitializationStep(TMComponentSvc.java:1083)
at oracle.sysman.gcagent.tmmain.lifecycle.TMComponentSvc.doInitializationStep(TMComponentSvc.java:916)
at oracle.sysman.gcagent.tmmain.lifecycle.TMComponentSvc.notifierDriver(TMComponentSvc.java:812)
at oracle.sysman.gcagent.tmmain.TMMain.startup(TMMain.java:256)
at oracle.sysman.gcagent.tmmain.TMMain.agentMain(TMMain.java:557)
at oracle.sysman.gcagent.tmmain.TMMain.main(TMMain.java:546)
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ less gcagent_errors.log
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log$ cd ..
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman$ cd config/
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ ls -lrt | tail
-rw-r----- 1 oracle dba 8001 May 13 2016 b64LocalCertificate.txt
-rw-r----- 1 oracle dba 17893 May 13 2016 b64InternetCertificate.txt
-rw-r----- 1 oracle dba 7833 May 13 2016 emd.properties.2016_05_13_10_05_31
-rw------- 1 oracle dba 499 May 20 2016 s_jvm_options.opt.save
-rw-r----- 1 oracle dba 8202 Sep 26 01:20 emd.properties.bkp
-rw-r----- 1 oracle dba 8204 Jan 9 09:46 emd.properties.bak
-rw-r----- 1 oracle dba 156 Jan 9 09:46 private.properties.bak
-rw-r----- 1 oracle dba 8204 Jan 9 09:48 emd.properties
-rw-r----- 1 oracle dba 266 Jan 9 09:48 autotune.properties
-rw-r----- 1 oracle dba 156 Jan 9 09:48 private.properties
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ date
Monday, January 9, 2020 10:07:56 AM PST
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ n/emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent is Not Running
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ which emctl
/db/oracle/product/agent12c/12.1.0.4/agent_inst/bin/emctl
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ e agent; emctl start agent

Oracle Enterprise Manager Cloud Control 12c Release 4 Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved. EMD clearstate failed: Offline clearstate failed : java.lang.OutOfMemoryError: Java heap space Oracle Enterprise Manager Cloud Control 12c Release 4 Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved. Starting agent ...........................................................................................................................failed. Consult emctl.log and emagent.nohup in: /db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/config$ cd .. oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman$ cd emd oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$ mkdir state-20200109 oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$ mv state/* state\-20200109/ oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$ du -hs state* 1K state 166M state-20200109 oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$ emctl clearstate agent; emctl sta
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
EMD clearstate completed successfully
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
Starting agent ......................... started.
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$ emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
Agent Version : 12.1.0.4.0
OMS Version : 12.1.0.4.0
Protocol Version : 12.1.0.1.0
Agent Home : /db/oracle/product/agent12c/12.1.0.4/agent_inst
Agent Log Directory : /db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/log
Agent Binaries : /db/oracle/product/agent12c/12.1.0.4/core/12.1.0.4.0
Agent Process ID : 27885
Parent Process ID : 27848
Agent URL : https://x0319vp114.nordstrom.net:3872/emd/main/
Local Agent URL in NAT : https://x0319vp114.nordstrom.net:3872/emd/main/
Repository URL : https://oemcloud.nordstrom.net:4900/empbs/upload
Started at : 2020-01-09 10:15:39
Started by user : oracle
Operating System : SunOS version 5.11 (sparcv9)
Last Reload : (none)
Last successful upload : 2020-01-09 10:17:35
Last attempted upload : 2020-01-09 10:17:35
Total Megabytes of XML files uploaded so far : 0.59
Number of XML files pending upload : 1
Size of XML files pending upload(MB) : 0
Available disk space on upload filesystem : 50.38%
Collection Status : Collections enabled
Heartbeat Status : Ok
Last attempted heartbeat to OMS : 2020-01-09 10:16:54
Last successful heartbeat to OMS : 2020-01-09 10:16:54
Next scheduled heartbeat to OMS : 2020-01-09 10:17:54

---------------------------------------------------------------
Agent is Running and Ready
oracle@dbserver:/db/oracle/product/agent12c/12.1.0.4/agent_inst/sysman/emd$

 

Installing EM 13c Agent on AIX 5.3

Hi,

Issues to install an Enterprise manager 13c agent on Database on AIX 5.3? Well, I found some errors I’d like to share with you:

First, to deploy agent manually by agentDeploy script, seems the ResponseFile is not working properly in some cases, so I recommend passing parameters manually:

./agentDeploy.sh AGENT_BASE_DIR = / u01 / app / oracle / agent13c -ignorePrereqs -invPtrLoc /etc/oraInst.loc AGENT_PORT = 3872 EM_UPLOAD_PORT = 4903 OMS_HOST =  ORACLE_HOSTNAME =  AGENT_INSTANCE_HOME = / u01 / app / oracle / agent13c / agent_inst AGENT_REGISTRATION_PASSWORD =  SCRATCHPATH = / backup / joao / temp

Al good? Not really, when starting the services, I started facing:

ERROR: Agent Configuration Failed SEVERE: emctl secure agent command failed with status = 1SEVERE: emctl secure agent command failed with status = 1SEVERE: emctl secure agent command failed with status = 1

Hmm… Why? So, seems this error is due to AIX secure with OMS (Linux). After a while, here is the workaround:

$ emctl secure agent -protocol TLS

That’s it! Try testing it now:

$ emctl upload agent

EMD upload completed successfully

Great! Agent installed. Now, to autodiscover further targets on host:

$ emctl config agent addinternaltargets

Now monitoring is complete!

[]s, Bicca.

OEM Real-Time Data not Displayed

Hi all,
So I was facing the follwoing situation in a client:
– SYS as SYSDBA passoword working to connect on database.
– Connecting to targets with this credentials working fine.
– However when loading real-time graphs it was simply not working.
– Tried to create manually the named credentials, still not working now with the error:

Listener refused the connection with the following error: ORA-12514, TNS:listener does not currently know of the service requested in connect descriptor.

See what I was getting from database home:

NewScreenshot 2019-05-09 às 11.34.33.png

Weird, but hey, the solution was already posted in Grepora!

Ok, I discovered anyway from MOS BUG 28513706 – 13c2EM: DB home page shows Connection Cache with this Cache Name does not exist. it miht be related to connection pools.
Even thought this was closed as not a bug, a learned a new workaround for it:

1. [OMS_HOME]/bin/emctl set property -name use_pooled_target_connections -value false 

2. Restart oms 

[OMS_HOME]/bin/emctl stop oms -all 

[OMS_HOME]/bin/emctl start oms

Hope it helps!
Cheers!

OEM Report: Last 6 month Database Space Usage and Growth [2]

Hey,
So I see you liked the last OEM Report post. But some have asked me for a table with all database space usage something like a summary table for executive view, once the last report gives it by the database, right…

Here it goes:
– I hid the target names for safety, but check on the last column “AVG 6-m Growth”. This is the one you want.
– This obviously needs to be in another Report, once no DB filter is present. So, here is an example of the table and the code:

ExecutiveReport.png

And let me ask you: Would you like to have this view from the ASM Perspective? Like this?

ASM-Growth

Great, right?
The codes for this:

NOTE: We got comments on this regarding the sysdate implicit conversion to timestamp. It worked fine to by, but in case you have any issue, you might want to check over this. Thank you for pointing out, Günter Nowak!

#Database Space Usage information in the last 6 months

select CURRENT_ALLOCATEDSPACE.TARGET_NAME,               
round(CURRENT_ALLOCATEDSPACE.SIZE_GB,2) as "Current allocated(GB)",
round(CURRENT_USEDSIZE.SIZE_GB,2) as "Current Used (GB)",
round(CURRENT_ALLOCATEDSPACE.SIZE_GB- CURRENT_USEDSIZE.SIZE_GB,2) as "Current Free (GB)",
round(CURRENT_USEDSIZE.SIZE_GB-USED_LAST_MONTH.SIZE_GB,2) as "1-m Growth (GB)",
round(MAX_USED.SIZE_GB,2) as "Max Used 6-m (GB)",
round((CURRENT_USEDSIZE.SIZE_GB- FIRST_USEDSPACE.SIZE_GB)/6,2) as "AVG 6-m Growth " 
from 
		(select T.TARGET_NAME,  --FIRST USED SPACE
		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP,
		sum(M.AVERAGE/1024)as SIZE_GB
		from   MGMT$METRIC_DAILY M,
		MGMT$TARGET_TYPE T,
			(select T.TARGET_NAME, MIN(ROLLUP_TIMESTAMP) MIN_TIME 
			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	  
			where (T.TARGET_TYPE='rac_database' OR 
			(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and      
			M.TARGET_GUID=T.TARGET_GUID and
			M.METRIC_GUID=T.METRIC_GUID and
			T.METRIC_NAME='tbspAllocation' and
			T.METRIC_COLUMN='spaceUsed' and
			M.METRIC_NAME=T.METRIC_NAME and
			M.METRIC_COLUMN=T.METRIC_COLUMN and
			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME, 			M.METRIC_COLUMN) MIN_DATE 		where (T.TARGET_TYPE='rac_database' OR  		(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='tbspAllocation' and 		T.METRIC_COLUMN='spaceUsed' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,m.rollup_timestamp) FIRST_USEDSPACE,	--FIRST USED SPACE 		(select T.TARGET_NAME,    --CURRENT ALLOCATED SPACE 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, max(ROLLUP_TIMESTAMP) MAX_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where (T.TARGET_TYPE='rac_database' OR  			(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='tbspAllocation' and 			T.METRIC_COLUMN='spaceAllocated' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME, 			M.METRIC_COLUMN) MAX_DATE 		where (T.TARGET_TYPE='rac_database' OR  		(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='tbspAllocation' and 		T.METRIC_COLUMN='spaceAllocated' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MAX_DATE.TARGET_NAME AND M.ROLLUP_TIMESTAMP=MAX_DATE.MAX_TIME 		group by t.target_name,m.rollup_timestamp) CURRENT_ALLOCATEDSPACE,--CURRENT ALLOCATED SPACE 		(select T.TARGET_NAME,  --USED SPACE IN LAST MONTH 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, MIN(ROLLUP_TIMESTAMP) MIN_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where (T.TARGET_TYPE='rac_database' OR  			(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='tbspAllocation' and 			T.METRIC_COLUMN='spaceUsed' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-30),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME, 			M.METRIC_COLUMN) MIN_DATE 		where (T.TARGET_TYPE='rac_database' OR  		(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='tbspAllocation' and 		T.METRIC_COLUMN='spaceUsed' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,m.rollup_timestamp) USED_LAST_MONTH, --USED SPACE IN LAST MONTH 		(select A_SIZE.TARGET_NAME, --MAX USED SPACE IN 6 MONTHS 		round(max(A_SIZE.SIZE_GB),2) as SIZE_GB 		from (select T.TARGET_NAME,   			M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 			sum(M.AVERAGE/1024) as SIZE_GB 			from MGMT$METRIC_DAILY M, 			MGMT$TARGET_TYPE T 			where (T.TARGET_TYPE='rac_database' OR  			(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='tbspAllocation' and 			T.METRIC_COLUMN='spaceUsed' and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME, 			M.METRIC_COLUMN, 			M.ROLLUP_TIMESTAMP) A_SIZE 		group by A_SIZE.TARGET_NAME) MAX_USED,	--MAX USED SPACE IN 6 MONTHS				   		
			(select T.TARGET_NAME,   --CURRENT USED SPACE 		
				M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, max(ROLLUP_TIMESTAMP) MAX_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where (T.TARGET_TYPE='rac_database' OR  			(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and      	 			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='tbspAllocation' and 			T.METRIC_COLUMN='spaceUsed' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate)
			group by T.TARGET_NAME,
			M.METRIC_COLUMN) MAX_DATE
		where (T.TARGET_TYPE='rac_database' OR 
		(T.TARGET_TYPE='oracle_database' and T.TYPE_QUALIFIER3 != 'RACINST')) and      
		M.TARGET_GUID=T.TARGET_GUID and
		M.METRIC_GUID=T.METRIC_GUID and
		T.METRIC_NAME='tbspAllocation' and
		T.METRIC_COLUMN='spaceUsed' and
		M.METRIC_NAME=T.METRIC_NAME and
		M.METRIC_COLUMN=T.METRIC_COLUMN and
		T.TARGET_NAME=MAX_DATE.TARGET_NAME AND M.ROLLUP_TIMESTAMP=MAX_DATE.MAX_TIME
		group by t.target_name,m.rollup_timestamp) CURRENT_USEDSIZE				 					     
WHERE 
CURRENT_ALLOCATEDSPACE.TARGET_NAME=CURRENT_USEDSIZE.TARGET_NAME and
CURRENT_ALLOCATEDSPACE.TARGET_NAME=USED_LAST_MONTH.TARGET_NAME and 
CURRENT_ALLOCATEDSPACE.TARGET_NAME=FIRST_USEDSPACE.TARGET_NAME and 
CURRENT_ALLOCATEDSPACE.TARGET_NAME=MAX_USED.TARGET_NAME 
order by 3 desc

# ASM Diskgroup Usage information in the last 6 months

select CURRENT_ALLOCATEDSPACE.TARGET_NAME "DB Name" , 
CURRENT_ALLOCATEDSPACE.KEY_VALUE  "Diskgroup",
round(CURRENT_ALLOCATEDSPACE.SIZE_GB,2) as "Current Allocated (GB)",
round(CURRENT_ALLOCATEDSPACE.SIZE_GB-CURRENT_FREESIZE.SIZE_GB,2) as "Current Used (GB)",
round(CURRENT_FREESIZE.SIZE_GB,2) as "Current Free (GB)",
round((CURRENT_ALLOCATEDSPACE.SIZE_GB-CURRENT_FREESIZE.SIZE_GB)-(TOTAL_SPACE_LAST_MONTH.SIZE_GB-FREE_LAST_MONTH.SIZE_GB),2) as "1-m Growth (GB)",
round(USED_SPACE_INFORMATION.USED_SPACE,2) as "Max Used 6-m (GB)",
round(((CURRENT_ALLOCATEDSPACE.SIZE_GB-CURRENT_FREESIZE.SIZE_GB)- (FIRST_TOTAL_SPACE.SIZE_GB-FIRST_FREESPACE.SIZE_GB))/6,2) as "AVG 6-m Growth" 
from 
		(select T.TARGET_NAME,  --FIRST FREE SPACE
		M.KEY_VALUE,
		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP,
		sum(M.AVERAGE/1024)as SIZE_GB
		from   MGMT$METRIC_DAILY M,
		MGMT$TARGET_TYPE T,
			(select T.TARGET_NAME, M.KEY_VALUE, MIN(ROLLUP_TIMESTAMP) MIN_TIME 
			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	  
			where T.TARGET_TYPE='osm_cluster' and      
			M.TARGET_GUID=T.TARGET_GUID and
			M.METRIC_GUID=T.METRIC_GUID and
			T.METRIC_NAME='DiskGroup_Usage' and
			T.METRIC_COLUMN='free_mb' and
			M.METRIC_NAME=T.METRIC_NAME and
			M.METRIC_COLUMN=T.METRIC_COLUMN and
			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME,M.key_value,M.METRIC_COLUMN) MIN_DATE 		where T.TARGET_TYPE='osm_cluster'  and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='DiskGroup_Usage' and 		T.METRIC_COLUMN='free_mb' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND M.KEY_VALUE=MIN_DATE.KEY_VALUE AND M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,M.KEY_VALUE, m.rollup_timestamp) FIRST_FREESPACE,	--FIRST FREE SPACE 		(select T.TARGET_NAME,  --FIRST TOTAL  SPACE 		M.KEY_VALUE, 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, M.KEY_VALUE, MIN(ROLLUP_TIMESTAMP) MIN_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where T.TARGET_TYPE='osm_cluster' and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='DiskGroup_Usage' and 			T.METRIC_COLUMN='total_mb' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME,M.key_value,M.METRIC_COLUMN) MIN_DATE 		where T.TARGET_TYPE='osm_cluster'  and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='DiskGroup_Usage' and 		T.METRIC_COLUMN='total_mb' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND M.KEY_VALUE=MIN_DATE.KEY_VALUE AND M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,M.KEY_VALUE, m.rollup_timestamp) FIRST_TOTAL_SPACE,	--FIRST TOTAL  SPACE		 		(select T.TARGET_NAME,    --CURRENT TOTAL SPACE 		M.KEY_VALUE, 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, M.KEY_VALUE, max(ROLLUP_TIMESTAMP) MAX_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where T.TARGET_TYPE='osm_cluster'  and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='DiskGroup_Usage' and 			T.METRIC_COLUMN='total_mb' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME, m.key_value, 			M.METRIC_COLUMN) MAX_DATE 		where T.TARGET_TYPE='osm_cluster' and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='DiskGroup_Usage' and 		T.METRIC_COLUMN='total_mb' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MAX_DATE.TARGET_NAME AND M.KEY_VALUE=MAX_DATE.KEY_VALUE AND M.ROLLUP_TIMESTAMP=MAX_DATE.MAX_TIME 		group by t.target_name,m.key_value,m.rollup_timestamp order by 1,3) CURRENT_ALLOCATEDSPACE,--CURRENT TOTAL SPACE 		(select T.TARGET_NAME,  --FREE SPACE IN LAST MONTH 		M.KEY_VALUE, 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME,M.KEY_VALUE, MIN(ROLLUP_TIMESTAMP) MIN_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where T.TARGET_TYPE='osm_cluster' and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='DiskGroup_Usage' and 			T.METRIC_COLUMN='free_mb' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-30),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME,M.KEY_VALUE) MIN_DATE 		where T.TARGET_TYPE='osm_cluster' and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='DiskGroup_Usage' and 		T.METRIC_COLUMN='free_mb' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND  M.KEY_VALUE=MIN_DATE.KEY_VALUE and  M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,m.key_value, m.rollup_timestamp) FREE_LAST_MONTH, --FREE SPACE IN LAST MONTH 		(select T.TARGET_NAME,  --TOTAL SPACE IN LAST MONTH		 		M.KEY_VALUE, 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME,M.KEY_VALUE, MIN(ROLLUP_TIMESTAMP) MIN_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where T.TARGET_TYPE='osm_cluster' and       			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='DiskGroup_Usage' and 			T.METRIC_COLUMN='total_mb' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and 			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-30),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 			group by T.TARGET_NAME,M.KEY_VALUE) MIN_DATE 		where T.TARGET_TYPE='osm_cluster' and       		M.TARGET_GUID=T.TARGET_GUID and 		M.METRIC_GUID=T.METRIC_GUID and 		T.METRIC_NAME='DiskGroup_Usage' and 		T.METRIC_COLUMN='total_mb' and 		M.METRIC_NAME=T.METRIC_NAME and 		M.METRIC_COLUMN=T.METRIC_COLUMN and 		T.TARGET_NAME=MIN_DATE.TARGET_NAME AND  M.KEY_VALUE=MIN_DATE.KEY_VALUE and  M.ROLLUP_TIMESTAMP=MIN_DATE.MIN_TIME 		group by t.target_name,m.key_value, m.rollup_timestamp) TOTAL_SPACE_LAST_MONTH, --TOTAL SPACE IN LAST MONTH	 		(SELECT SPACE_ALLOCATED.TARGET_NAME, -- USED_SPACE_INFORMATION 		SPACE_ALLOCATED.KEY_VALUE,  		max(SPACE_ALLOCATED.SIZE_GB- FREE_SPACE.SIZE_GB) USED_SPACE 		FROM( 				select T.TARGET_NAME,  				M.KEY_VALUE,  				M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 				sum(M.AVERAGE/1024) as SIZE_GB 				from MGMT$METRIC_DAILY M, 				MGMT$TARGET_TYPE T 				where T.TARGET_TYPE='osm_cluster' and       				M.TARGET_GUID=T.TARGET_GUID and 				M.METRIC_GUID=T.METRIC_GUID and 				T.METRIC_NAME='DiskGroup_Usage' and 				T.METRIC_COLUMN='total_mb' and 				M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
				M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 				group by T.TARGET_NAME,	M.KEY_VALUE, 				M.ROLLUP_TIMESTAMP) SPACE_ALLOCATED, 				(select T.TARGET_NAME,  				M.KEY_VALUE,  				M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 				sum(M.AVERAGE/1024) as SIZE_GB 				from MGMT$METRIC_DAILY M, 				MGMT$TARGET_TYPE T 				where T.TARGET_TYPE='osm_cluster' and       				M.TARGET_GUID=T.TARGET_GUID and 				M.METRIC_GUID=T.METRIC_GUID and 				T.METRIC_NAME='DiskGroup_Usage' and 				T.METRIC_COLUMN='free_mb' and 				M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
				M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate) 				group by T.TARGET_NAME,	M.KEY_VALUE, 				M.ROLLUP_TIMESTAMP) FREE_SPACE 		WHERE SPACE_ALLOCATED.TARGET_NAME=FREE_SPACE.TARGET_NAME AND 		SPACE_ALLOCATED.KEY_VALUE=FREE_SPACE.KEY_VALUE AND 		SPACE_ALLOCATED.MONTH_TIMESTAMP=FREE_SPACE.MONTH_TIMESTAMP  		group by  SPACE_ALLOCATED.TARGET_NAME, SPACE_ALLOCATED.KEY_VALUE) USED_SPACE_INFORMATION, -- USED_SPACE_INFORMATION				 		(select T.TARGET_NAME,   --CURRENT FREE SPACE 		M.KEY_VALUE, 		M.ROLLUP_TIMESTAMP as MONTH_TIMESTAMP, 		sum(M.AVERAGE/1024)as SIZE_GB 		from   MGMT$METRIC_DAILY M, 		MGMT$TARGET_TYPE T, 			(select T.TARGET_NAME, M.KEY_VALUE, max(ROLLUP_TIMESTAMP) MAX_TIME  			from  MGMT$METRIC_DAILY M, MGMT$TARGET_TYPE T	   			where T.TARGET_TYPE='osm_cluster' and      	 			M.TARGET_GUID=T.TARGET_GUID and 			M.METRIC_GUID=T.METRIC_GUID and 			T.METRIC_NAME='DiskGroup_Usage' and 			T.METRIC_COLUMN='free_mb' and 			M.METRIC_NAME=T.METRIC_NAME and 			M.METRIC_COLUMN=T.METRIC_COLUMN and  			M.ROLLUP_TIMESTAMP >= to_timestamp(trunc((sysdate-180),'MM')) and
			M.ROLLUP_TIMESTAMP <= to_timestamp(sysdate)
			group by T.TARGET_NAME,M.KEY_VALUE ,M.METRIC_COLUMN) MAX_DATE
		where T.TARGET_TYPE='osm_cluster' and      
		M.TARGET_GUID=T.TARGET_GUID and
		M.METRIC_GUID=T.METRIC_GUID and
		T.METRIC_NAME='DiskGroup_Usage' and
		T.METRIC_COLUMN='free_mb' and
		M.METRIC_NAME=T.METRIC_NAME and
		M.METRIC_COLUMN=T.METRIC_COLUMN and
		T.TARGET_NAME=MAX_DATE.TARGET_NAME AND M.KEY_VALUE=MAX_DATE.KEY_VALUE AND M.ROLLUP_TIMESTAMP=MAX_DATE.MAX_TIME
		group by t.target_name,m.key_value,m.rollup_timestamp) CURRENT_FREESIZE	  --CURRENT FREE SPACE			
WHERE 
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=CURRENT_FREESIZE.TARGET_NAME and CURRENT_ALLOCATEDSPACE.KEY_VALUE=CURRENT_FREESIZE.KEY_VALUE) and
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=FREE_LAST_MONTH.TARGET_NAME and CURRENT_ALLOCATEDSPACE.KEY_VALUE=FREE_LAST_MONTH.KEY_VALUE) and 
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=FIRST_FREESPACE.TARGET_NAME and CURRENT_ALLOCATEDSPACE.KEY_VALUE=FIRST_FREESPACE.KEY_VALUE) and 
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=TOTAL_SPACE_LAST_MONTH.TARGET_NAME and CURRENT_ALLOCATEDSPACE.KEY_VALUE=TOTAL_SPACE_LAST_MONTH.KEY_VALUE) and
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=FIRST_TOTAL_SPACE.TARGET_NAME and CURRENT_ALLOCATEDSPACE.KEY_VALUE=FIRST_TOTAL_SPACE.KEY_VALUE) and
(CURRENT_ALLOCATEDSPACE.TARGET_NAME=USED_SPACE_INFORMATION.TARGET_NAME AND CURRENT_ALLOCATEDSPACE.KEY_VALUE=USED_SPACE_INFORMATION.KEY_VALUE )
order by 4 desc

OEM: HttpConnectionException:Response code:404

Hello all,
So, a client’s OEM Information Report was running and email being sent, but all queries (Report sections) resulting on error:

Unexpected error getting the HTTP response stream while generating report: oracle.sysman.eml.ip.publishJob.HttpConnectionException:Response code:404

 

Weird?
I had a silar issue, as per documented on this post: OEM Information Reports: ORA-00600 [kpndbcon-svchpnotNULL]

This is happening due TCP timeout while executing Report after 5 minutes. By default, Idle Timeout set for Profile parameter (TCP) for the virtual server in F5 is 300 seconds, for example.
I simulated manually execution of each SQL on report and noticed report takes around 8 minutes to run.

What I did? I took some of the slow queries and transformed to a Materialized View with daily refresh.

This was valid in my case because the report runs only once a day. Remember to always check on your own situation. Perhaps an hourly refresh or so is better for you.

Another possibility is to engage the LB admin to modify this parameter by setting a new protocol profile for the virtual server or modifying the existing one.

NOTE: After modifying SLB Values, you may need to restart OMS :

emctl stop oms -all
emctl start oms

Reference?
MOS oracle.sysman.eml.ip.publishJob.HttpConnectionException:Response code:404″ Errors for reports run from EM (Doc ID 2061361.1)

OEM Report: Last 6 month Database Space Usage and Growth

Hello All!
So I had worked in some very useful reports to have in OEM. In next weeks I’ll share some code you may like… 🙂

To create it? Enterprise -> Reports -> Information Reports. There are several nice default reports there you me like.

Now, let’s go to the first Report, as per title:

1. First you Select the Database:

Select_DB.png

2. Then you see the report:

Report3

That’s nice, right?
Here is a report for another database with actual 640GB average growth per month (its expected, once DBSize is over 60TB):

Growth

So, Mat, can you share the queries? Of course:

More“OEM Report: Last 6 month Database Space Usage and Growth”

Check Ports in use by OEM

So, how to quickly check which ports are indeed in use by OEM?

Easy:

[oracle@greporasrv ~]$ cat $OMS_HOME/install/portlist.ini
Enterprise Manager Upload Http Port=4889
Enterprise Manager Upload Http SSL Port=4903
OHS Http Port=9788
BI Publisher Http Port=9701
Enterprise Manager Central Console Http SSL Port=7802
Node Manager Http SSL Port=7403
BI Publisher Http SSL Port=9803
OHS Http SSL Port=9851
Managed Server Http Port=7202
Oracle Management Agent Port=3872
Enterprise Manager Central Console Http Port=7788
Admin Server Http SSL Port=7102
Managed Server Http SSL Port=7301

Hope it helps!

OEM13c: Regions that display real-time data will not be displayed. Exception while loading RAC Database Home Page: null

Hi all,
So I was having this issue from a Database Home page on OEM 13c:

image_OEMBug.png

Actually, OMS log was presenting several null pointer exceptions… So, whats is the deal?

Everything seemed to match to MOS Bug 22957131 – OEM13C: Exception while loading RAC Database Home Page: null.

The solution?
– Patch 25197714 for the EM 13.2 OMS
– Patch 25155095 for the EM 13.1 OMS

Also, those fixes are included on following Boudle Patches:
– 13.2.1.0.161231
– 13.1.1.0.161220

Applied the patch and solved my case. Hope it helps you!

More Reference:
– EM 13C: Target Database Home Page Displays Message in Enterprise Manager 13c Cloud Control: Regions that display real-time data will not be displayed. Exception while loading RAC Database Home Page: null (Doc ID 2210123.1)
– Note 2219797.1 Enterprise Manager 13.2 Master Bundle Patch List
– Note 2124038.1 Enterprise Manager 13.1 Master Bundle Patch List for the Management Agent and Plug-ins

OEM Metric “Memory Utilization” Different on 12c and 13c

So, as rollout strategy we created a new OEM13c to decommission a 12c. However during the testes, noticed Memory Utilization metric was a lot different between 12c and 13c. Why?

Happens that the Memory Utilization is calculated differently between 12c and 13c, but also seems 13c is more accurate, as per MOS The Host Memory Utilization Percentage Calculation in Enterprise Manager Cloud Control (Doc ID 1908853.1)

Well, those who are familiar with memory use computations in the operating system might become confused when examining the memory use metric data from Enterprise Manager 12c and 13c Cloud Control. Metrics such as Memory Utilization (%) do not have an equivalent in the OS, but OS data will be used in its derivation.

This is the formula used by Enterprise Manager 12.1.0.3 for Linux Memory Utilization (%), for example:

Memory Utilization (%) = (100.0 * (activeMem) / realMem)
 = 100 * 25046000/99060536
 = 25.28
EM Shows : 25.5

* On this, activeMem is Active Memory (Active), and realMem is Total Memory (MemTotal).

Comparing this with MemFree, which is not valid, might provide an impression that utilization is not being accurately represented.

Also, the “OEM13c value” was already collected in OEM12c, but under metric name “Used Logical Memory”. And basically “Memory Utilization” in 12c uses “activeMem” instead of “realMem-(freeMem+Buffers+Cached)”. As per image below.

OEM12_grep_mem

The formula in place on 13c is exactly the same as used to fix MOS EM 13c: Incorrect Memory Utilization Reported for Linux Hosts in Enterprise Manager 13.1.0.0.0 Cloud Control (Doc ID 2144976.1)

Example:

[root@greporasrv ~]# free
             total       used       free     shared    buffers     cached
Mem:     264087460  257669460    6418000    7657500     461088   11008128
-/+ buffers/cache:  246200244   17887216
Swap:     25165820    3365104   21800716

(100.0 * (realMem-(freeMem+Buffers+Cached)) / realMem)
100*(264087460-(6418000+461088+11008128))/264087460) = 93,22678328

As per OEM13c:

OEM13_grep_mem.jpg

Also, by checking on server using SAR, seems value in OEM 13c is more accurate, indeed:

[root@greporasrv ~]# sar -r
Linux 2.6.39-400.294.4.el6uek.x86_64 (greporasrv) 	08/29/2017 	_x86_64_	(44 CPU)

12:00:01 AM kbmemfree kbmemused  %memused kbbuffers  kbcached  kbcommit   %commit
12:10:01 AM   5377540 258709920     97.96    719080  10775828  83876744     29.00
12:20:01 AM   6131220 257956240     97.68    719504  10721084  82467712     28.51
12:30:01 AM   5623060 258464400     97.87    719700  10720972  83456216     28.85
12:40:01 AM   5606572 258480888     97.88    719836  10779108  83228440     28.77
12:50:01 AM   5783256 258304204     97.81    719860  10848644  82925908     28.67
01:00:01 AM   4151148 259936312     98.43    719888  11589048  84400040     29.18
01:10:01 AM   3717000 260370460     98.59    719904  11534336  84838784     29.33
01:20:01 AM   4282412 259805048     98.38    720164  11480792  84047568     29.06
01:30:01 AM   4473128 259614332     98.31    720184  11483604  83857348     28.99
01:40:01 AM   5113136 258974324     98.06    720256  11528492  83036284     28.71
01:50:01 AM   4971036 259116424     98.12    720284  11587956  82955128     28.68
02:00:01 AM   4026540 260060920     98.48    720344  11663184  86489692     29.90
02:10:01 AM   4312916 259774544     98.37    720380  11678316  83834592     28.98
02:20:01 AM   5058980 259028480     98.08    720408  11624028  82876972     28.65
02:30:01 AM   4609908 259477552     98.25    720556  11541392  83871244     29.00
02:40:01 AM   5020668 259066792     98.10    720592  11574912  82887808     28.66
02:50:01 AM   5175916 258911544     98.04    720748  11619572  82725252     28.60
03:00:01 AM   4701236 259386224     98.22    720780  11687100  83421624     28.84
03:10:01 AM   4757976 259329484     98.20    721204  11648864  83298716     28.80
03:20:01 AM   4485280 259602180     98.30    721248  11719272  83299472     28.80
03:30:01 AM   4267068 259820392     98.38    721264  11794688  83683344     28.93
03:40:01 AM   4080264 260007196     98.45    721404  11856796  83863540     28.99
03:50:01 AM   4864276 259223184     98.16    721676  11975372  82735744     28.60
04:00:01 AM   4427284 259660176     98.32    721696  12056676  83450524     28.85
04:10:01 AM   4868184 259219276     98.16    721736  11863420  82860464     28.65
04:20:01 AM   4711608 259375852     98.22    721760  11877192  83205684     28.77
04:30:01 AM   4452764 259634696     98.31    721928  11945108  83515596     28.87
04:40:01 AM   4800700 259286760     98.18    722072  12015444  82681320     28.58
04:50:01 AM   4796588 259290872     98.18    722212  12075496  82703948     28.59
05:00:01 AM   4320164 259767296     98.36    722372  12164956  83390596     28.83
05:10:01 AM   3350940 260736520     98.73    722488  12120116  84525028     29.22
05:20:01 AM   4200236 259887224     98.41    722628  11965996  83510580     28.87
05:30:01 AM   4028020 260059440     98.47    722640  12019516  83720748     28.94
05:40:01 AM   3929740 260157720     98.51    722720  12069520  83632964     28.91
05:50:01 AM   2719452 261368008     98.97    723460  14408924  83745112     28.95
06:00:01 AM   1530448 262557012     99.42    723644  14943264  84618304     29.25
06:10:01 AM   2925268 261162192     98.89    605748  13363596  84792452     29.31
06:20:02 AM   3235532 260851928     98.77    605916  13811664  83516740     28.87
06:30:01 AM   3265640 260821820     98.76    606072  13848028  83385196     28.83
06:40:01 AM   2102756 261984704     99.20    606232  14745508  83638764     28.92
06:50:01 AM   2386376 261701084     99.10    606644  14821232  83118484     28.74
07:00:01 AM   5343496 258743964     97.98    186908  12019804  84375032     29.17
07:10:01 AM   5073472 259013988     98.08    219044  12597104  83579876     28.90
07:20:01 AM   5380380 258707080     97.96    241300  12600412  83107160     28.73
07:30:01 AM   5063504 259023956     98.08    253984  12653840  83373804     28.82
07:40:01 AM   8241032 255846428     96.88    269960   9772232  83072188     28.72
07:50:01 AM   8549616 255537844     96.76    278472   9853288  82646916     28.57
08:00:01 AM   8185864 255901596     96.90    287296   9938816  83179808     28.76
08:10:01 AM   7797504 256289956     97.05    295856  10029904  83464160     28.86
08:20:01 AM   8813696 255273764     96.66    302620   9930672  82081220     28.38
08:30:01 AM   8574984 255512476     96.75    309156   9880124  82557600     28.54
08:40:01 AM   8010072 256077388     96.97    314804   9912220  83241764     28.78
08:50:01 AM   8791112 255296348     96.67    319568   9980532  81787424     28.28