Backups are needed when they are initially created and after each modification.
OBGE Configuration and Database
Steps to properly backup are listed here:
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If the OBGE was installed on the Application Server, then its application and configuration only needs to be backed up after initial installation, upgrades, or when changes are made to the configuration files.
If using a ProductionAutomation Engineserver rather than the OBGE (which is NOT recommended but is possible), its database should be backed up daily, if not several times per day.
Backups are needed after each install and upgrade.