SMON Blocking Drop Temporary Tablespace
(Doc ID 1500044.1)
Last updated on FEBRUARY 24, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
*** Checked for relevance on 05-Apr-2016 ***
The following steps have been performed successfully:
- Create a new temporary tablespace
- Declare as the new default temp
- Make sure that no users have the old temp as their default
Now trying to drop the old temporary tablespace, the session hangs.
Analyzing the problem shows the following:
- Tracing the session using 10046 shows that the session is waiting for event "enq: TS - contention'"
- System state dump shows that the session is blocked by SMON
- SMON is waiting for event "SMON TIMER"
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