Error 3642



Message text

Unable to start flusher thread.


Adaptive Server attempted to start a process to handle log flushing for the asynchronous logging service (ALS). This attempt failed. For more information about ALS, see the Performance and Tuning: Locking section “Asynchronous log service.”


Adaptive Server uses a process slot for the thread. Verify that the number of user connections is configured sufficiently high to allow for this. Increasing number of user connections can help resolve this error.

Additional information

If the 3642 error persists after configuration changes, it may be necessary to gather a configurable shared memory dump (CSMD). See the section “Configuring a shared memory dump on conditions” in the most recent version of the Troubleshooting And Disaster Recovery guide.

Versions in which this error is raised

Version 12.5.1 and later