Query on CDB_* Views Hang on ADG
(Doc ID 2292583.1)
Last updated on MARCH 09, 2019
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 to 220.127.116.11 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
The symptom of this issue is some queries on CDB_* views spin on parse stage, it never finished. The following is a sample tkprof output:
comment: this issue only happens on ADG+CDB environment.
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