My Oracle Support Banner

Solaris Cluster Zone Cluster Oracle UNIX Distributed Lock Manager (UDLM/DLM) Failed to Start Due to Lack of Shared Memory with "Prog <ucmm_reconf> step <cmmstart>: timed out" (Doc ID 1939670.1)

Last updated on DECEMBER 07, 2021

Applies to:

Solaris Cluster - Version 3.2 U2 to 4.3 [Release 3.2 to 4.3]
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)

Symptoms

This issue was observed in a Solaris Cluster Zone Cluster which was configured to host an Oracle RAC database. The DLM (Distributed Lock Manager) failed to start and results in a timeout of the ucmm in step cmmstart. This leads to call the abort step and terminates the ucmmd daemon.

Symptoms visible in various log files:

The /var/adm/messages of the global zone:

 

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!

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