12c RAC

Oracle Real Application Clusters (RAC)  is a cluster database with a shared cache architecture that overcomes the limitations of traditional shared-nothing and shared-disk approaches to provide highly scalable and available database solutions for all your business applications. Oracle RAC is a key component of Oracle's private cloud architecture. Oracle RAC support is included in the Oracle Database Standard Edition for higher levels of system uptime.

Technical Posts on 12c/11g RAC

12cR2 RAC Installation

http://dbaocm.blogspot.com/2020/10/rac12cr2-12cr2-rac-installation-step-by.html

• 12cR2 RAC Upgrade from 12cR1 RAC 

http://dbaocm.blogspot.com/2017/06/12cr2-rac-upgrade-from-12cr1-rac.html

• Add Node to Cluster 12cR1 Manually - Silent Mode   http://dbaocm.blogspot.com/2017/04/add-node-to-rac-cluster-12cr1-manually.html

• Cluster Name - Version in 12c RAC       

http://dbaocm.blogspot.com/2015/08/cluster-name-version-in-12c-rac.html

Migration from Non RAC to RAC on new 12c Cluster | Standalone to RAC Conversion

http://dbaocm.blogspot.com/2016/07/migration-from-non-rac-to-rac-on-new.html

PSU on Oracle 12c RAC    

http://dbaocm.blogspot.com/2015/09/psu-on-oracle-12c-rac.html

RAC Upgrade 11gR2 to 12cR1- from 11.2.0.3 to 12.1.0.1   

http://dbaocm.blogspot.com/2015/09/rac-upgrade-11gr2-to-12cr1-from-11203.html

RAC Upgrade 11gR2 to 12cR1- from 11.2.0.3 to 12.1.0.1   

http://dbaocm.blogspot.com/2015/09/rac-upgrade-11gr2-to-12cr1-from-11203.html

ACFS - No Write Permission (Permission denied)

http://dbaocm.blogspot.com/2015/09/acfs-no-write-permission-permission.html

Convert Standalone to RAC using Active Dataguard Switchover with little downtime    

http://dbaocm.blogspot.com/2015/08/convert-standalone-to-rac-using-active.html

Modify SCAN Listener Port from 1521 to 1721 on Oracle 12c RAC  

http://dbaocm.blogspot.com/2015/07/modify-scan-listener-port-from-1521-to.html

Reverse path filter parameter "rp_filter" in 12c RAC installation    

http://dbaocm.blogspot.com/2015/06/reverse-path-filter-parameter-rpfilter.html

Oracle 11gR2 ASM Installation     

http://dbaocm.blogspot.com/2015/03/oracle-11gr2-asm-installation.html

Oracle Kernel RAC: ON and OFF  

http://dbaocm.blogspot.com/2015/03/oracle-kernel-rac-on-and-off.html

OCSSD starts if voting disk & OCR resides in ASM Diskgroups?        

http://dbaocm.blogspot.com/2015/03/ocssd-starts-if-voting-disk-ocr-resides.html

Failed to establish dependency between database DBNAME and diskgroup resource     

http://dbaocm.blogspot.com/2015/03/failed-to-establish-dependency-between.html

ORA-15027: active use of diskgroup “DG_DATA” precludes its dismount 

http://dbaocm.blogspot.com/2015/03/ora-15027-active-use-of-diskgroup.html

OCR and Voting Disk Migration  to Different ASM Diskgroup 

http://dbaocm.blogspot.com/2015/03/ocr-and-voting-disk-migration-to.html

Online Relocation on Policy Manage Database on RAC OneNode Database

http://dbaocm.blogspot.com/2015/03/online-relocation-on-policy-manage.html

Move SPFILE from local file system to ASM diskgroup 

http://dbaocm.blogspot.com/2015/03/move-spfile-from-local-file-system-to.html

Start the ASM instance if the SPFILE itself is stored in an ASM disk group?         

http://dbaocm.blogspot.com/2015/03/start-asm-instance-if-spfile-itself-is.html


CLSGPNP_NO_PROFILE. GPnP profile 'profile.xml' does not exist  http://dbaocm.blogspot.com/2016/03/clsgpnpnoprofile-gpnp-profile.html


Failed to record pid for GPNPD / CRS-2302:Cannot get GPnP profile. http://dbaocm.blogspot.com/2016/03/failed-to-record-pid-for-gpnpd-crs.html

Remove /  Delete Node from RAC 11gR2
http://dbaocm.blogspot.com/2016/04/deleting-nodes-from-cluster-11gr2-rac.html

PRCR-1071: CRS-0245: PRCD-1184 : Failed to upgrade configuration of database type to version 11.2.0.3.0 to 12c Cluster.

http://dbaocm.blogspot.com/2016/07/prcr-1071-crs-0245-prcd-1184-failed-to.html

Creating Container Database for Oracle Grid Infrastructure Management Repository Failed on 12cR1 (12.1.0.2)

http://dbaocm.blogspot.com/2017/06/creating-container-database-for-oracle.html

OCR Integrity Failure

http://dbaocm.blogspot.com/2017/06/ocr-integrity-failure.html

Proxy User in Oracle

https://dbaocm.blogspot.com/2020/10/proxy-user-in-oracle-database.html