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12c Database : CDB Overview

From the release 12c Database, the new architecture has been introduced similar to MS-SQL concepts a master database and the multiple databases attached to that master database shares a single SGA.

In same way Oracle Introduced multitenant architecture where the multiple databases share same SGA and all databases are interlinked to master database called Root […]

Step by Step Migrating RAC Database to a new Cluster

Excellent step by step document from my colleague, Venkat, with his kind permission I am publishing the same for all benefit.

Please note the following can be done using Duplicate database from active database without moving any backups etc. But that is another variant.

########################################################################################### Copy RAC database to another RAC Server ###########################################################################################

Task: Copy […]

12c: Step by Step 12c RAC DB Installation on Linux 64bit using Virtual Box

The first part I.e Grid Infrastructure (RAC) Installation is here

And the Final part You can download it from here

http://db.geeksinsight.com/wp-content/uploads/2013/07/Step-by-Step-Oracle-12c-RAC-Database-on-Linux-64bit.docx

-Thanks Geek DBA

vktm process high cpu usage

Hello,

While installing 12c grid infrastructure, observed that vktm and LMS process are consuming high CPU

top – 23:48:23 up 4:58, 4 users, load average: 13.38, 13.80, 12.08 Tasks: 217 total, 2 running, 215 sleeping, 0 stopped, 0 zombie Cpu(s): 27.5%us, 26.1%sy, 0.0%ni, 0.7%id, 0.7%wa, 0.0%hi, 45.1%si, 0.0%st Mem: 3519360k total, 3416516k used, 102844k free, […]

12c: Step by Step 12c GridInfrastructure (RAC) Installation on Linux 64bit

Hello All

Finally able to install the 12c Grid Infrastructure and here is the procedural document. You can download from below link, Also added in downloads link

http://db.geeksinsight.com/wp-content/uploads/2013/07/Step-by-Step-Oracle-12c-Grid-Infrastructure_Installation.docx

-Thanks Geek DBA