Shared Pool 中 ges resource dynamic 和 ges enqueues 超高诊断

ORA-04031 Errors Occurring with High "ges resource dynamic" & "ges enqueues" Memory Usage In The Shared Pool (文档 ID 2063751.1)

ORA-04031 errors occurring in a RAC instance with the trace file showing high memory usage for "ges resource dynamic" and "ges enqueues" memory in the shared pool. This can cause LMD processes to become unresponsive leading to an instance termination.

This is due to unpublished bug:21373473 fixed in 12.2, and occurs due to DX and BB locks being cached but not cleared out. This fix removes the need to cache DX and BB locks and hence reduces overall shared pool memory usage in RAC instances.

ORA-04031 errors occurring with high memory utilization for "ges enqueues" & "ges resource dynamic" memory allocations.

SOLUTION

Download and apply the one-off patch number 21373473 for your platform and version combination.

Please note that if using 12.1.0.2, then you should also apply the related patch number 21260431 which also impacts the shared pool memory allocations identified here.

This issue can also be worked around by setting _GES_DIRECT_FREE_RES_TYPE="CTARAHDXBB" in the instances.