Exadata

Slow running RMAN compressed backup post changing compatible parameter from 12.1.0.2 to 19.0.0.

Dear Readers, Trust you are doing well!!! In this post, I will discussing about critical issue, I faced recently wherein RMAN compressed backup started taking significant time post changing compatible parameter from 12.1.0.2 to 19.0.0. Normally RMAN L0 compressed backup of DB size 70+ TB used to take approx 10 […]

Degraded DB performance with significant waits for “reliable messages” & “enq: KO – fast object checkpoint”

Dear Readers, Trust you are doing well!!! In this post, I will discussing about an interesting issue I faced recently on one of the database setups, wherein we received incident about generic performance issue. This database was recently created for reporting purpose. Though no specific errors seen in database, application […]

CELL-02630: There is a communication error between Management Server and Cell Server caused by a mismatch of security keys. Check that both servers have access to and use the same $OSSCONF/cellmskey.ora file.

IHAC who is on Exadata image version: 11.2.3.3.0.131014.1, faced below issue. Any command on cellcli was failing with error: CELL-02630. CELL-02630: There is a communication error between Management Server and Cell Server caused by a mismatch of security keys. Check that both servers have access to and use the same […]