Query Parse Never Ends After Upgrade From 12.1 to 12.2
(Doc ID 2492165.1)
Last updated on APRIL 17, 2023
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 and later
Information in this document applies to any platform.
- After upgrade to 184.108.40.206,query does not finish:
SELECT count(distinct val1) FROM view_x
Errorstack on the hanging process shows a spin on CPU:
service name: SYS$USERS
O/S info: user: oracle, term: pts/3, ospid: 42075326
machine: program: sqlplus (TNS V1-V3)
application name: sqlplus (TNS V1-V3), hash value=
Current Wait Stack:
Not in wait; last wait ended 29 min 12 sec <<<<<<<<<<<<<<<<<<<<<<<
fixed_waits=0 flags=0x28 boundary=0x0/-1
Session Wait History:
elapsed time of 29 min 12 sec since last wait
Call stack contains kkqstRemRedundantGrBy.
Database upgraded from 220.127.116.11 to 18.104.22.168.
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document