IEEE Day 2013 – Best 10 New Feature of Oracle Database 12c

Yesterday, I attended IEEE Day 2013 Baku, Azerbaijan conference at Qafqaz University. IEEE Day 2013 is important anniversary that engineers worldwide celebrate the first time when IEEE members gathered to share their technical ideas in 1884. It is fourth celebration worldwide and first in Azerbaijan take placed at the Qafqaz (more...)

OTN Article : Oracle Data Guard 12c: “Synchronous redo transport”

OTN (Oracle Technology Network) Portuguese published our article :
Oracle Data Guard 12c: “Synchronous redo transport” by authors Joel Perez (Oracle ACED), Rodrigo Mufalini (Oracle ACE) and me.

You can read article from :

My special thank to my friends Joel and Rodrigo for support.

Mahir M. Quluzade

Book Review : Oracle Data Guard 11gR2 Administration Beginner’s Guide

Just finished review of book "Oracle Data Guard 11gR2 Administration Beginner's Guide” by authors, my dear friends Emre Baransel and Nassyam Basha.

"Oracle Data Guard 11gR2 Administration Beginner's Guide” book is a good introduction to Oracle Data Guard 11g R2 with examples that will be useful to all DBA’s. It (more...)

Converting an Administrator-Managed Database to a Policy-Managed Database and vise versa.

Cluster database configuration can be Policy-Managed or Administrator-Managed. A Policy-Managed database is dynamic with instances managed automatically based on server pools for effective resource utilization. Admin-Managed database results in instances tied to specific servers.

When we create 11g Release 2 RAC database, on database configuration assistant’s 3 of 13 (more...)

Which device is mapped Oracle ASM disk?


Yesterday Yuva Kishore is commented on my Oracleasm - Instantiating disk : failed post and asked a question: We can list the asm disks (listdisks) but where can we find the mapping that ASMDISK1 is mapped to /dev/sda1 and so on? 

I want answer this question with this (more...)

Oracle Data Guard 11g – Redo Transport User


As you know when we create Data Guard Configuration, we must copy password file. Because SYS user is default redo transport user on Data Guard configurations. 

SYS password is changed on primary

When we change SYS password on primary database, redo transport service is stopping and we are (more...)

Cluvfy error : Framework setup check failed on all the nodes


As you know Oracle recommends  before installation Oracle Real Application Clusters 11g Release 2 run Cluster Verification utility with  stage previous and post installation cluster ware or database.

Cluster verification utility help you for getting error before and  after installation Oracle Grid Infrastructure and Real Application Clusters Database.

I getting following error : 

[grid@oel62-rac1 grid]$ ./ stage -pre crsinst -n oel62-rac1,oel62-rac2 –verbose
Checking user equivalence...
Check: User equivalence for user "grid"
  Node Name                             Status                 
  ------------------------------------  ------------------------
  oel62-rac2                            passed                 
  oel62-rac1                            passed              
Result: User equivalence check passed for user "grid"

Verifying node (more...)

Oracle VM 3.2 Now Available

Oracle Virtualization product Oracle VM 3.2.1 now available. 

You can read press release here and Oracle VM 3.2.1 documentation here. Download Oracle VM from 


MySQL Database Support: MySQL Database is used as the bundled database for the Oracle VM Manager management repository for simple installations. Support for an existing Oracle SE/EE Database is still included within the installer so that you can perform a custom installation to take advantage of your existing infrastructure. Simple installation using the bundled MySQL Database is fully supported within production environments.

Discontinued inclusion of Oracle (more...)

Differences of Oracle Database Editions

My  friend asked me what is the differences of  Oracle Database Editions? I answered his question and I sent him a  information for this topic from Oracle Documentation Library : Oracle® Database Licensing Information 11g Release 2 (11.2). 

I want share with you a following table from documentation, too. This tables shows  Feature Availability for Oracle Database Editions. 

SE1 - Oracle Database Standard Edition One
SE   - Oracle Database Standard Edition 
EE   - Oracle Database Enterprise Edition 

High Availability
Oracle Fail Safe
Windows only