Introducing Oracle GoldenGate Studio 12.2.1

Now GoldenGate developments is easy friendly.

Cheers for Oracle Demo that include first mapping.


Oracle GoldenGate Studio Highligts:

  • Separating Logical from the fisical
    • One project contain many solutions
    • A Solutions contain one logical design and many Physical Deployments
  • You can AUTOMAP table mappings – drag and drop optional columns
  • Easy deployments
  • Easy to setup DB connections


EM Event: Metrics “Current Open Cursors Count” is at %

Hi all,
This is simple right?

Some dev is forgetting to close the cursors. 🙂
If you don’t know what I’m talking about, I couldn’t find better reference than this article by Tech on the Net.

As DBA, we can identify the application schema which is causing the issue by the following:More“EM Event: Metrics “Current Open Cursors Count” is at %”

Exadata: 7 Useful Commands to check Port/Sensor Alarms

Hello all!

This days I had an alarm with message below:

Message=The aggregate sensor /SYS/CABLE_CONN_STAT has a fault.

There is some useful commands I used to verify all ports/sensors in my exadata cluster.

In summary, these commands:
1) Use Intelligent Platform Management Interface (IPMI) to read the Sensor Data Record (SDR) repository
2) Use Intelligent Platform Management Interface (IPMI) to view the ILOM SP System Event Log (SEL)
3) Display all host nodes with ibhosts
4) Use ibcheckstate to scan InfiniBand fabric and validate the port logical and physical state
5) Use ibcheckerrors to scan InfiniBand fabric and validate the connectivity as described in the topology file
6) Checking for sensor healthy from switch
7) Check the overall health of the InfiniBand switch, on the Exadata switch itself

The Commands are:

More“Exadata: 7 Useful Commands to check Port/Sensor Alarms”

(OSB) Oracle Service Bus 12.2 – LDAP Authorization

Oracle Service Bus 12.2 is now available to download on Oracle support.

It bring news to middleware admin and new features to developer.

Now, all user priviledges and group roles are managed by ‘EM Console’. So it would be little confusing in this release.

I had little inconvenince on first time that I triyed to use OSB with LDAP autorization.

After configure Weblogic in LDAP, user could login in Weblogic Console (/console)

But, can’t login Service Bus Console (/sbconsole), taking in browser http 401 (Unauthorized)

In WL Admin log:

[AdminServer] [ERROR] [ADFC-50017] [oracle.adfinternal.controller.application.AdfcExceptionHandler] [tid: [ACTIVE].ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: maiquel_oliveira] [ecid: fdf185a3-35fd-4171-9b75-4b80a0f40b03-000000cf,0] [APP: service-bus] [partition-name: DOMAIN] [tenant-name: GLOBAL] [DSID: 0000Lu77u7K7q2r6wJAhMG1Pj34E000001] ADFc: While attempting to handle this exception the application's exception handler failed.[[ ADFC-0619: Authorization check failed: User 'user_name' does not have 'VIEW' permission on 'jsf.resourcesPageDef'.

Error 401–Unauthorized

From RFC 2068 Hypertext Transfer Protocol — HTTP/1.1:

10.4.2 401 Unauthorized

The request requires user authentication. The response MUST include a WWW-Authenticate header field (section 14.46) containing a challenge applicable to the requested resource. The client MAY repeat the request with a suitable Authorization header field (section 14.8). If the request already included Authorization credentials, then the 401 response indicates that authorization has been refused for those credentials. If the 401 response contains the same challenge as the prior response, and the user agent has already attempted authentication at least once, then the user SHOULD be presented the entity that was given in the response, since that entity MAY include relevant diagnostic information. HTTP access authentication is explained in section 11.

Follow the trick:

More“(OSB) Oracle Service Bus 12.2 – LDAP Authorization”

Long running jobs AQ$_PLSQL_NTFN_%

Hello all!

Some time ago I had an issue with some jobs running for 64 days. Cool han?
All jobs names were AQ$_PLSQL_NTFN_%. All activity of jobs were related to SQLID f7zggdz9p7bhk in wait event “Streams AQ: waiting for messages in the queue”.

# SQLID f7zggdz9p7bhk:
begin SYS.SCHEDULER$_JOB_EVENT_HANDLER(context => :1,reginfo =>$_reg_info(:2, :3, :4, :5, :6, :7),descr =>$_descriptor(:8, :9, :10, sys.msg_prop_t(:11, :12, :13, :14, :15, :16, :17, :18,$_agent(:19, :20, :21), :22, :23),$_ntfn_descriptor(:24), :25, :26), payload => :27, payloadl => :28); end;

Reviewing on MOS, found a match to Bug 20528052 – Many AQ$_PLSQL_NTFN jobs executed affecting database performance (Doc ID 20528052.8).

The root cause is procedure SYS.SCHEDULER$_JOB_EVENT_HANDLER keep waiting AQ PL/SQL Notification callbacks associated with scheduler job email notifications for messages in “SYS”.”SCHEDULER$_EVENT_QUEUE” which no longer exist.

From MOS, this can be easily solved with fix for Bug 16623661 – No email notification is sent by scheduler, wich is included in (base) and affect versions and later.
Also from MOS, and which I did, is drop these jobs. The problem is these jobs just restart and have the same problem again after automated recreation.

So, apply the fix or upgrade your database. 😉

Some related references:
Bug 20528052 – Many AQ$_PLSQL_NTFN jobs executed affecting database performance (Doc ID 20528052.8)
AQ$_PLSQL_NTFN Scheduler Jobs Executed in large numbers affecting Database performance (Doc ID 2001165.1)

Hope it helps!

Purge Recycle Bin Older than…

Hello all!

Have your recyclebin being full/big but don’t want to make a complete “PURGE RECYCLE BIN;”?
Want remove only older than x days (like older than 30 days)?

Please don’t:

DELETE from DBA_RECYCLEBIN where droptime<sysdate-30;
PURGE DBA_RECYCLEBIN where droptime<sysdate-30;

A good way to perform that is to execute output from:

# 30 Days
select 'purge table '||owner||'."'||OBJECT_NAME||'";' 
from dba_recyclebin where type='TABLE' 
and to_date(droptime,'YYYY-MM-DD:HH24:MI:SS')<sysdate-30;

# 30 minutes
select 'purge table '||owner||'."'||OBJECT_NAME||'";' 
from dba_recyclebin where type='TABLE' and 

There is some reference here too:
How To Drop / Delete / Purge Recyclebin or DBA_RECYCLBIN For Objects Older Than x Days/minutes or selective purge of objects from recycle bin (Doc ID 1596147.1)

Hope it help you!