Amazon RDS: How to perform RMAN operations?

Hi all,

Need to performa any RMAN Operation from Amazon RDS? Maybe something like validating backups?

Well, we have some options under by using RDSADMIN_RMAN_UTIL package. See below an example for validate backup:

BEGIN
 rdsadmin.rdsadmin_rman_util.validate_database(
 p_validation_type => 'PHYSICAL+LOGICAL',
 p_parallel => 4,
 p_section_size_mb => 10,
 p_rman_to_dbms_output => FALSE);
END;
/

More info about it: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.Oracle.CommonDBATasks.RMAN.html

Hope it helps, cheers!

AWS RDS: Read Oracle Traces from SQL*Plus

Hi all,

One more for AWS services. Let’s say you need to read tracefiles from RDS, hot to do it?

Here is an example on how to list and read those files:

SQL> select * from dba_directories;

OWNER DIRECTORY_NAME DIRECTORY_PATH ORIGIN_CON_ID
---------- ------------------------- ------------------------------------------------------------ -------------
SYS BDUMP /rdsdbdata/log/trace 0
SYS ADUMP /rdsdbdata/log/audit 0
SYS OPATCH_LOG_DIR /rdsdbbin/oracle/QOpatch 0
SYS OPATCH_SCRIPT_DIR /rdsdbbin/oracle/QOpatch 0
SYS DATA_PUMP_DIR /rdsdbdata/datapump 0
SYS OPATCH_INST_DIR /rdsdbbin/oracle/OPatch 0
SYS TMP /rdsdbdata/userdirs/01 0

7 rows selected.


SQL> select * from table (rdsadmin.rds_file_util.read_text_file( p_directory => 'BDUMP', p_filename => 'trace/CPROD1_s003_81573.trc'));


From the trace file:
=========================
..................................................................................
index undo for leaf key operations
KTB Redo
op: 0x02 ver: 0x01
compat bit: 4 (post-11) padding: 1
op: C uba: 0x000e289e.51da.47
Dump kdilk : itl=98, kdxlkflg=0x1 sdc=0 indexid=0x1c53db block=0x0019bdc0
(kdxlpu): purge leaf row
key :(24):
07 78 76 0c 17 17 09 32 08 c7 07 1a 02 28 15 01 18 06 00 1a 3c 99 00 1e

File 3 is not mirrored.

End dump previous blocks for kdsgrp
* kdsgrp1-2: ***********************************************
kdsDumpState: RID context dump

45511581 rows selected.

SQL> select * from table (rdsadmin.rds_file_util.listdir( p_directory => 'BDUMP')) order by mtime;

FILENAME TYPE FILESIZE MTIME
---------------------------------------- ---------- ---------- ---------
CPROD1_ora_48800.trm file 73 24-DEC-18
CPROD1_ora_48800.trc file 998 24-DEC-18
CPROD1_ora_86597.trc file 998 24-DEC-18
CPROD1_ora_86597.trm file 73 24-DEC-18
CPROD1_ora_7999.trc file 881 24-DEC-18
CPROD1_ora_7999.trm file 71 24-DEC-18
CPROD1_ora_7997.trm file 71 24-DEC-18
CPROD1_ora_7997.trc file 881 24-DEC-18
CPROD1_ora_8240.trm file 71 24-DEC-18
CPROD1_ora_8240.trc file 881 24-DEC-18
CPROD1_ora_8381.trm file 72 24-DEC-18
CPROD1_ora_8381.trc file 995 24-DEC-18
CPROD1_ora_8540.trc file 881 24-DEC-18
CPROD1_ora_8540.trm file 71 24-DEC-18
CPROD1_ora_9876.trc file 881 24-DEC-18
CPROD1_ora_9876.trm file 71 24-DEC-18
CPROD1_ora_11142.trm file 72 24-DEC-18
CPROD1_ora_11142.trc file 883 24-DEC-18
CPROD1_ora_11182.trc file 883 24-DEC-18
CPROD1_ora_11182.trm file 72 24-DEC-18
CPROD1_ora_55077.trm file 73 24-DEC-18
CPROD1_ora_55077.trc file 997 24-DEC-18
CPROD1_ora_92260.trm file 73 24-DEC-18
CPROD1_ora_92260.trc file 997 24-DEC-18
CPROD1_ora_123869.trc file 1000 24-DEC-18
CPROD1_ora_123869.trm file 74 24-DEC-18
CPROD1_ora_41305.trc file 998 24-DEC-18
CPROD1_ora_41305.trm file 73 24-DEC-18
CPROD1_j002_3293.trc file 114049 24-DEC-18
CPROD1_j002_3293.trm file 370 24-DEC-18
CPROD1_mmon_71739.trc file 7511332 24-DEC-18
CPROD1_mmon_71739.trm file 738330 24-DEC-18
CPROD1_ora_92888.trc file 997 24-DEC-18
CPROD1_ora_92888.trm file 73 24-DEC-18
trace/ directory 323584 24-DEC-18
alert_CPROD1.log file 204808 24-DEC-18
CPROD1_ora_70145.trc file 1470 24-DEC-18
CPROD1_ora_70145.trm file 109 24-DEC-18

3845 rows selected.

SQL> select * from table (rdsadmin.rds_file_util.listdir( p_directory => 'BDUMP')) where filename like '%CPROD1_s003_81573.trc%';

FILENAME TYPE FILESIZE MTIME
---------------------------------------- ---------- ---------- ---------
CPROD1_s003_81573.trc file 1948134047 23-DEC-18

									

Checking Basic Licensing Info on a DB Server

Hi all!
So, I got a new client and started checking on his licensing and hardware. Then I realized how “non-standard” this is and Oracle should probably provide a better way to do it. So I decided to share a few things:

# Checking Oracle Version Installed:

[oracle@greporaSRV inventory]$ cd /opt/oraInventory/logs
[oracle@greporaSRV logs]$  grep "\- Database edition" installActions*.log
INFO: - Database edition : Standard Edition One (Create and configure a database)

# Checking number of Sockets

[root@greporaSRV ~]# cat /proc/cpuinfo | grep "physical id" | sort -u | wc -l
1

# Checking number of CPU Cores per Socket

[root@greporaSRV ~]# lscpu | grep 'socket'
Core(s) per socket:    4

Parallel file transfer on Linux

Hi all,

I had a request to copy a ton of files from one file system to another,  I know that there are tools that can help with that like rsync but due to some requirements and me wanted to do some scripting I put something together  to help with this request. This is not the 1st time I do something like this but it is the 1st time I share 🙂

What I’m sharing is now what I did for the request I mentioned but you will get an idea

The script will copy a list of files from one server to another. This list I usually create by using find like this

find /Directory_which_I_want_to_copy -type f > file_list.txt

The script will receive some parameters as listed below

parallel_xfer.ksh    

Also a requirement for this to work is that you can ssh to the target server without a password.

It will keep X parallel sessions running at all times until there are new files to start copying it, After all copies are started, it will monitor them until completion. Also the script assumes that the source and target directory destination is the same but this is easily changed if needed.

The logging needs to be improved but it will show the file it started as well their processes count

Hope it helps

Elisson

#!/bin/ksh
DBLIST=${1}
DEST_DIR=${2}
SERVER=${3}
NUM_SESS=${4}
STARTED_COUNT=0
RUN_COUNT=0

trim() {
    local var=$@
    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
    echo "$var"
}


FILE_COUNT="$(cat ${DEST_DIR}/$DBLIST | wc -l)"
cd ${DEST_DIR}
for FILE in $(cat $DBLIST)
do
 STARTED_COUNT=$((${STARTED_COUNT}+1))
 if [ ${RUN_COUNT} -le ${NUM_SESS} ]
 then
   sftp -Cq USER@${SERVER}:${FILE} ${DEST_DIR}/. >/dev/null 2>/dev/null &
   echo "`date` - Transferring file ${FILE} to ${DEST_DIR} - ${STARTED_COUNT}/$(trim ${FILE_COUNT})"
   sleep 5
 fi
 echo "\n"

 RUN_COUNT=$(ps -ef | grep " ${$} " | grep sftp | grep -v grep | wc -l)

 while [ ${RUN_COUNT} -ge ${NUM_SESS} ]
 do
  RUN_COUNT=$(ps -ef | grep " ${$} " | grep sftp | grep -v grep | wc -l)
  echo "`date` - $(trim ${RUN_COUNT}) transfer processes running"
  echo "`date` - Amount of GB transferred `du -sg ${DEST_DIR}`\n"
  sleep 60
 done
done

while [ $(ps -ef | grep " ${$} " | grep sftp | grep -v grep | wc -l) -gt 0  ]
do
 RUN_COUNT=$(ps -ef | grep " ${$} " | grep sftp | grep -v grep | wc -l)
 echo "`date` - $(trim ${RUN_COUNT}) transfer processes running"
 echo "`date` - Amount of GB transferred - `du -sg ${DEST_DIR}`\n"
 sleep 60
done
echo "`date` - Transfered completed"

AWS: ALTER SYSTEM and Managing SYS Objects in RDS

I’m very often managing services over EC2 and there are a few actions clients are often getting some issues to perform in RDS. So I decided to list here 5 of them:

Kill sessions:

begin
rdsadmin.rdsadmin_util.kill(
sid => &sid,
serial => &serial,
method => 'IMMEDIATE');
end;
/

Flush shared_pool or buffer_cache:

exec rdsadmin.rdsadmin_util.flush_shared_pool;
exec rdsadmin.rdsadmin_util.flush_buffer_cache;

Grant Privileges to SYS Objects

# Grant

begin
    rdsadmin.rdsadmin_util.grant_sys_object(
        p_obj_name  => 'V_$SESSION',
        p_grantee   => 'GREPORA',
        p_privilege => 'SELECT');
end;
/

# Grant with Grant Option

begin
    rdsadmin.rdsadmin_util.grant_sys_object(
        p_obj_name     => 'V_$SESSION',
        p_grantee      => 'GREPORA',
        p_privilege    => 'SELECT',
        p_grant_option => true);
end;
/

# Revoke

begin
    rdsadmin.rdsadmin_util.revoke_sys_object(
        p_obj_name  => 'V_$SESSION',
        p_revokee   => 'GREPORA',
        p_privilege => 'SELECT');
end;
/

 

Hope it Helps!

Clear Exadata Component Messages After Maintenance

Hi all,

Quick one today: So you completed a maintenance in a component (a memory component, as per example below) but keep receiving messages of failure?

Well, try clearing all the error messages after complete the maintenance and lets check if the threshold is reached again. If so, we may need to really replace it.

How to do it? Easy:

ssh root@grepora01-ilom
-> show /SYS/MB/P0/D3
Expected:
[...]
fault_state = Faulted
[..]
-> set /SYS/MB/P0/D3 clear_fault_action=true
Are you sure you want to clear /SYS/MB/P0/D3 (y/n)? y
-> show /SYS/MB/P0/D3
[Expected]
 /SYS/MB/P0/D3
    Targets:
        PRSNT
        SERVICE
Properties:
type = DIMM
ipmi_name = MB/P0/D3
fru_name = 16384MB DDR4 SDRAM DIMM
fru_manufacturer = Samsung
fru_part_number = %
fru_rev_level = 01
fru_serial_number = %
 fault_state = OK
clear_fault_action = (none)

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.

Oracle Container for Kubernetes Hands-On – Porto Alegre

Hello all!

I’m happy to announce here the next Meetup in Porto Alegre speaking over Oracle Container for Kubernetes  and how Oracle works with Cloud Native.

The meeting will be conducted by Diogo Shibata, from Oracle.

When?
Next October 2nd!

Where?
ATTIVE Coworking – Rua Carlos Gardel nº 55 – Bela Vista – Porto Alegre

Cost? FREE
Just confirm you presence here.

IMPORTANT: bring your laptop.

WhatsApp Image 2019-09-23 at 22.54.55.jpeg

guobguors

Oracle cloud computing hand on

Oracle and others cloud providers are doing nice stuff building their cloud strategies.

Oracle is granting U$ 300 to quickly deploy OLTP /DW and other technology platforms.

With cloud and distributed infrastructure we can code, test, deploy and quickly build any lab purpose as a free* offer.

Let’s review and run the fastest & free sandbox machines for cloud improvements purpose.

cloud 1.PNG

It runs good enogth 🙂

cloud 2

Quickly deploy machines. And receive classic middleware connection files.

\o/

cloud 3

It run’s so easy,  but it may cost money/digital value as it ‘soon it burn’ credit at Oracle.

Why not to test it and build muilt-cloud solution?

Don’t forget security and data privacy standards and Oracle availability.

With this solution at cloud is so simple to run a ‘DB as a button’, it spent 2 minutes in my lab. It actually available on What is amazing time for typical lab or tech hand.

Let’s test it and CHEERS.