OCP 12C – Privileges

User Task-Specific Administrative Privileges To continue with the objective of separating duties and the least privileges, Oracle 12c introduce new administratives privileges all destinated to accomplish specific duties: SYSBACKUP : Used for RMAN operations like BACKUP, RESTORE, RECOVER SYSDG : Used to administer DATAGUARD, In 12c when you use DGMGRL commandline interface your are automatically [...]

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OOW14 Session: RAC’fying Multitenant

Thank you for attending my session RAC'fying Multitenant at Oracle Open World 2014. You can download the slide deck here.

As always I would love to hear from you.

OCP 12C – Auditing

Unified Audit Data Trail Unifed Auditing offers a consolidated approach, all the audit data is consolidated in a single place. Unified Auditing consolidate audit records for the following sources : Standard Auditing Fine-grained auditing (DBMS_FGA) RAC security auditing RMAN auditing Database Vault auditing Oracle Label Security auditing Oracle Data Mining Oracle Data Pump Oracle SQL*Loader In [...]

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Index Compression Part V: 12c Advanced Index Compression (Little Wonder)

I’ve finally managed to find some free time in the evening to write a new blog piece :) This will have to be the record for the longest time between parts in a series, having written Part IV of this Index Compression series way way back in February 2008 !! Here are the links to the previous articles […]

Advanced Queue Quickie: Errors and Privileges

File this one under the misleading-errors department. One of my developers was working with a new queue. He pinged me when he got this error trying to create a job that used the queue:

ERROR at line 1:
ORA-27373: unknown or illegal event source queue
ORA-06512: at "SYS.DBMS_ISCHED", line 124
ORA-06512: at "SYS.DBMS_SCHEDULER", line 314
ORA-06512: at line 2

The CREATE_JOB statement was:

job_name => 'foo.bar_q_job',
job_type => 'PLSQL_BLOCK',

Oracle OpenWorld 2014 – An OakTable World picture presentation

Run #em12c on #db12c? – Discussion from Oracle Open World (MOS Note: 1920632.1)

Ok Folks, I’ve been here are Oracle Open World for a few days now.  In that time, I’ve had numerous conversations about running Oracle Enterprise Manager 12c on Oracle Database 12c.  I will be honest and say that I’ve enjoyed these conversations; however, after about the fourth time I decided I need to write a quick post on the explanation discussed in these conversations.  

Early this year (August) I wrote a post about the (more...)

OCP 12C – In Database Archiving and Temporal Validity

In Database Archiving In Database Archiving is a new feature of Oracle 12c meant to solve management of historical data inside the database. Like its name says, this functionnality leaves data into the database, so it remains accessible if you need it. With In Database Archiving, historical data remains in the database but is invisible to [...]

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OCP 12C – Information Lifecycle Management and Storage Enhancements

Information Lifecycle Management Before reading this flashcard I recommend you to read my article on ILM. Automatic Data Optimization (ADO) Policy based data management Let you define policies at : Tablespace level Segment level Row level Policies can either compress data or move data to a different tablespace Policies let you define when, what and [...]

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Shrink Tablespace

In a comment on my previous post on shrinking tablespaces Jason Bucata and Karsten Spang both reported problems with small objects that didn’t move to the start of the tablespace. This behaviour is inevitable with dictionary managed tablespaces (regardless of the size of the object), but I don’t think it’s likely to happen with locally managed tablespaces if they’ve been defined with uniform extent sizes. Jason’s comment made me realise, though, that I’d overlooked a feature of (more...)

OCP 12C – Backup, Recovery and Flashback for a CDB/PDB

Backup a CDB/PDB To make a database backup you need the SYSBACKUP or SYSDBA privilege. You can backup the CDB and all the PDBs independantly, all together, or by specifying a list. You can backup a PDB by connecting directly to it and use: RMAN> BACKUP DATABASE: You can backup a PDB by connecting to [...]

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Introducing the eDB360 Tool (Sep 30, 2014)

SQLT XPLORE: The SQLT XPLAIN hidden child (Jun 21, 2014)

SQL Tuning Tools of the Trade (Jun 21, 2014)

SQL Tuning made easier with SQLTXPLAIN (SQLT) (Jun 21, 2014)

Using SQL Plan Management (SPM) to balance Plan Flexibility and Plan Stability (Jun 21, 2014)

Understanding How is that Adaptive Cursor Sharing (ACS) produces multiple Optimal Plans (Jun 21, 2014)

I’m speaking at…

HROUG,SIOUG and BGOUG. At HROUG and SIOUG I’ll be speaking for Exadata and at BGOUG, maybe for near zero downtime migration or some similar geeky topic ;) Links to the events:         Have fun! Kovachev

Oracle #GoldenGate Parameter File Templates

This week I’ve been enjoying spending some time at Oracle Open World in San Francisco, CA.  While here, I’ve been talking with everyone, friends old and new, and it came to my attention that it would be a good idea to have some useful templates for Oracle GoldenGate parameter files.  With this in mind, I decided to create some generic templates with comments for Oracle GoldenGate processes.  These templates can be found on my Scripts (more...)

Oracle OpenWorld 2014 – Datatype context…?!

The native JSON database functionality presentations are done. If you want to experience first hand what you can do with those new operators during Oracle...

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Slides from OakTableWorld and OpenWorld

Thanks to anyone that came along to my sessions at OpenWorld.

You can review the slides via the links below:




Exadata Shellshock: IB Switches Vulnerable

Andy Colvin has the lowdown on the Oracle response and fixes for the bash shellshock vulnerability.

However, when I last looked it seemed Oracle had not discussed anything regarding the IB switches being vulnerable.

The IB switches have bash running on them and Oracle have verified the IB switches are indeed vulnerable.

[root@dm01dbadm01 ~]# ssh

root@'s password:

Last login: Tue Sep 30 22:46:41 2014 from dm01dbadm01.e-dba.com


Exadata and Bash Shellshock

There has recently been a lot of news about the exploit revealed in the bash shell.  While the fix is very quick to implement, there are a couple of tricks that are required to install this update on an Exadata environment.  According to Oracle support note #1405320.1, Exadata storage server versions 11.2.3.x.x and 12.1.1.x.x are susceptible to the exploit.  On a typical Oracle Enterprise Linux, a simple (more...)

RDX IT Process Automation

RDX’s IT Process Automation Strategy

Remote DBA Experts (RDX) is the largest pure-play provider of remote data infrastructure services. We have been providing remote services for over 20 years, which also makes us one of the pioneers in this space. We currently support hundreds of customers and thousands of database implementations.

Remote data infrastructure services is an extremely competitive market arena. Our competitors range from “2 guys in a garage” to major outsourcing providers like (more...)

Packt Publishing – ALL eBooks and Videos are just $10 each or less until the 2nd of October

Just spread good campaign from Packt Publishing - It's a good news for people who love to learn something new - ALL eBooks and Videos are just $10 or less -- the more you choose to learn, the more you save:
  • Any 1 or 2 eBooks/Videos -- $10 each
  • Any 3-5 eBooks/Videos -- $8 each
  • Any 6 or more eBooks/Videos -- $6 each