The vertica database will not start and the following error is seen
Unable to read database catalogs - cannot start database.
Database drdata did not start successfully: Unable to read database catalogs
Dx NetOps Performance Management any version
ulimit was 1024
See https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/performance-management/3-7/upgrading/upgrade-the-data-repository.html
If the database does not start then open a support case for further troubleshooting