The tdbcmgmt user monitors connectivity to the managed Teradata systems. To avoid any operational issues, a DBA must be aware of the following:
- The tdbcmgmt user must be excluded from all backup jobs running on the Teradata system. It has no data to store in backups. Running a backup on this database can cause locks blocking incoming requests and resulting in an unintended outage.
- The tdbcmgmt user must be prioritized in the Teradata Active System Management (TASM) ruleset as a high priority tactical user (never queued). Failing to do so could cause database locking issues leading to unintended outages.
- The dictionary scanner requires the tdbcmgmt user to have SHOW permission on scanned databases to retrieve the object text and default database for stored procedures.