Queries involving Advanced Queueing Queue Tables which use the SYS.XMLTYPE within their ADT have a High Version Count
(Doc ID 1473494.1)
Last updated on MARCH 04, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.2]
Enterprise Manager for Oracle Database - Version 126.96.36.199 to 188.8.131.52 [Release 11.2]
Information in this document applies to any platform.
Queries of the form
select (sysdate-enq_time) * 86400, msg_state from <Schema>.<Table_name> where msg_id =...
have high version counts.
As per the cursor trace events discussed in <Note 296377.1> the trace file for the relevant sql_id the reason for the sharing failure is related to anydata transformation
SQL pgadep:1 pgapls:1 user
kksUnlockChild: releasing child
Failed sharing : 80000000 <<<<<<<<<<<<<<<<<<<<<<<<<< anydata transformation
The underlying queue tables for the associated queries have ADTs which utilise sys.xmltype.
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