The management process (mgd) could not rebuild the configuration database file. The Junos command-line interface (CLI) and management process (mgd) together form the Junos user interface that accepts and processes input from users and client applications.
The UI_DBASE_REBUILD_FAILED message is logged each time the management process fails to rebuild the configuration database.
When a UI_DBASE_REBUILD_FAILED event occurs, a message similar to the following is reported:
mgd: UI_DBASE_REBUILD_FAILED: automatic rebuild of the database '/var/db/juniper.db' failed
The cause of the UI_DBASE_REBUILD_FAILED event is due to an internal software failure occurring.
Examine the following output to help determine the cause of this message:
show log messages
Look for any related events that occurred at or just before the UI_DBASE_REBUILD_FAILED message.
If there was a core file generated, open a case with Juniper Support.