A session hung waiting for wait event 'gc cr request', and it blocked
other sessions at wait event 'cr request retry'.
If a session hangs on 'gc cr request' but there are no blockers then you may have encountered this problem.
- Long gc cr request wait
- GCS CLIENT: grant 0 cvt 1 mode 0x0 role 0x24...
- GCS CLIENT: KJBL history 0x1
- GCS SHADOW: grant 0 cvt 1 mode 0x0 role 0x2#...lst 0xc0
Set the parameter _gc_cr_server_read_wait=false. Example:
alter system set "_gc_cr_server_read_wait"=false scope=both sid='*' ;
Please note: The above is a summary description only. Actual symptoms can vary. Matching to any symptoms here does not confirm that you are encountering this problem. For questions about this bug please consult Oracle Support.