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 …

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crsctl start crs doesn’t start crs – 10gR2

Today morning a box got rebooted, crs(10.2.0.5 vesrsion) didn't come up automatically. Manual crsctl start crs command didn't update any log file in crsd,cssd, or even the alertxx4040.log xx4040: (test1) /etc/oracle/scls_scr/test1/root> cat crsstart enable xx4040: (test1) /etc/oracle/scls_scr/test1/root> So, as crsstart is enabled, it should have come up automatically.Ran cluvfy xx4040: (test1) /home/oracle>cluvfy stage -pre crsinst …