Apex Upgrade Fails with ORA-04021: Timeout Occurred While Waiting to Lock Object
Last updated on OCTOBER 31, 2016
Applies to:Oracle Application Express (formerly HTML DB) - Version 4.2.5.00 and later
Information in this document applies to any platform.
1. Upgrading APEX from 4.2.X to 5.0.X.
2. Installation log shows:
APEX was upgraded.
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 hundreds of Community platforms