CRS-1136 when upgrading Clusterware to 12.1.0.2

Recently I have tried to upgrade the Clusterware from 12.1.0.1 to 12.1.0.2 on a two node Linux cluster. After starting the rootupgrade.sh I got the following error. CRS-1136: Rejecting the rolling upgrade mode change because the cluster is being patched. CRS-4000: Command Start failed, or completed with errors. 2014/08/07 12:48:41 CLSRSC-511: failed to set Oracle…

12c New Feature: Session level sequences

In 12c a new SESSION level sequence can be created to support sequence values at session level. This feature can be usefull if you are working with global temporary tables that have session level existence. If you create a session level sequence you can create a unique range of values in your active session not…