DB startup/shutdown error after downgrade from 11gR2 to 10gR2

I was asked to work on a 2-node RAC db which was downgraded to 10.2.0.5 from 11.2.0.3. While working, i had stopped the database using "shutdown immediate" command from sqlplus instead of srvctl. While start the db using srvctl - wdlab1: (matrix1) /u01/app/oracle/product/rdbms/10205> srvctl start database -d matrix_lab -o open PRKR-1001 : cluster database matrix_lab … Continue reading DB startup/shutdown error after downgrade from 11gR2 to 10gR2