Current indexes on [sys_schema_change] does not seem to be able to handle a large number of records, and can cause page to not load
Steps to Reproduce
- Get [sys_schema_change] table to be large, mil+ for good measure
- Upgrade an instance so that the upgrad monitor page has stats from the upgrade to display
- Nav to upgrade monitor $upgrade_client.do
Page takes several minutes to load or can have the maximum execution time exceeded and not load.
Add the following index to speed things up: sys_schema_change(started, finished, duration)
Related Problem: PRB1255465