Hi,
try this:
1-Check if you have space in hard drive or if you have some softlikink,mount point , chek if all are working fine.
2-Also check if you have memory available.
3-After reviewing the various RDS logs, the main thing I noticed was the change log cycling. This problem occurs when the DataProtector processes are too busy to switch the logcycle.. Another solution to this problem is to add a parameter to /opt/omni/.omnirc file:
OB2DBRETRY=10
After adding this, the CRS service should be restarted for it to take affect.
The OB2DBRETRY parameter will continue to attempt to complete an IDB session in the event of a conflict and this would better handle time outs.
4-Rebot the server.
Regards