Error: 'Failed to get lock: cluster' Or 'Fail to acquire checkin lock' On the Unifier Login Page After Restarting Unifier (Doc ID 2019465.1)

Last updated on MAY 01, 2023

Applies to:

Symptoms

After restarting the Unifier application server(s) for any reason including routine maintenance, server crashes, upgrades/patches, etc., the following error(s) is seen on the Unifier login page and users cannot login:

ERROR
-----------------------
Possible errors seen on the login page:

• Connecting to Unifier database... (with exception)
• Failed to get lock: cluster
• Fail to acquire checkin lock. (with exception)

ADDITIONAL INFORMATION
-----------------------
In some cases, the following error is seen in the Weblogic startup window:

Exception in thread "Unifier Startup" java.lang.RuntimeException: java.lang.RuntimeException: Failed to get lock: cluster

Changes

Cause

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