Manual Log Switching Causing "Thread 1 Cannot Allocate New Log" Message in the Alert Log (Doc ID 435887.1)

Last updated on JUNE 28, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.
Oracle Server Enterprise Edition - Version: 10.2.0.1 to 11.2.0.3



Symptoms

When you manually switch the online redo logs with an alter system command as below.

SQL> alter system switch logfile;
System altered.

The Alert log will display the following messages.

Thread 1 cannot allocate new log, sequence 207
Checkpoint not complete

- or -

Thread 1 cannot allocate new log, sequence 746
Private strand flush not complete

Changes

Implemented a scheduler job to manually switch the online redo logs every 15 minutes.

Cause

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