SMON Blocking Drop Temporary Tablespace (Doc ID 1500044.1)

Last updated on JANUARY 07, 2025

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 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.

Symptoms

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"

Cause

	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

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.