When you using Oracle RAC, you have grid , db components on each node, someday you want to remove it (may cause of app requirement, buget and so on), you may disable grid service by add comment to /etc/inttab or un-install, the oracle startup and running fine in single environment but sometime you'll see ORA-29702: error occurred in Cluster Group Service operation that cause of
LMON process still active and It is assume it to be RAC Instance
This situation if you ensure no need rac anymore you can delink it from oracle libary by
1. Shutdown the database completely.2. Relink with RAC OFF :
$ cd $ORACLE_HOME/rdbms/lib$ make -f ins_rdbms.mk rac_off$ make -f ins_rdbms.mk ioracle
3. Startup the database.
Hope this help you:D
Chatchai Komrangded
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