Downgrade from Database 6.1 to 6.0
Downgrade instructions for 6.1 with secondary index in shared memory
If you have to downgrade from a deployment of Database 6.1 that has a secondary index stored in shared memory, delete the following shared memory segments after stopping the server (asd) in order to reclaim this memory.
Run the following command:
ipcs | grep ^0xa2 | awk '{print $1}' | xargs -i ipcrm -M {}