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Full System Recovery: Documentum Agent (DB2)

The difference between a normal restore and a full system restore is the severity of the problem. Normally, if data is lost or removed, it is recovered from the archives using the normal restore procedures. However, when a normal restore operation cannot correct a software and/or hardware corruption problem, some additional changes may be required.

The level of system restore required may be different as described below.

  • When the database is corrupted and a restore is required, both the application software and database must be restored. This can be achieved by performing the following steps:
    • Restoring the application by using the file system Agent restore options.
    • Restoring the database files using the restore options in the Agent.
  • When the client system (operating system, hardware, hard drives, etc.) is damaged or destroyed, a full system restore may be required.

In the case of disaster recovery, where a full system restore is required, you must rebuild the system to exactly the state as it existed before the problem. In some cases, where the Documentum Repository is corrupted, the Documentum software must be reloaded and the server rebuilt. To resolve a hardware corruption problem, see the appropriate Documentum documentation. 

Preparing for a Full System Recovery

Before an unplanned disaster strikes, do the following:

  • Perform regular backups of Documentum and database binaries using the Unix File System iDataAgent.
  • Perform regular backups of Documentum configuration files (e.g., server.ini, Docbroker.ini, dfc.properties) and database configuration files using the Unix File System Agent.
  • Using the Documentum Agent, perform a full repository backup that includes the database, storage areas, and full-text indexes.
    • Perform frequent backups of logs and data with control files will also aid in successfully performing a successful disaster recovery procedure.
    • Ensure to exclude database and log files from the backup performed using the Unix File System Agent. This can be achieved by configuring a backup filter in the subclient to exclude these files (e.g., .dbf).
  • Once an application has been discovered, the version of the application on which the Agent was installed or upgraded on the client computer is displayed in the Instance Properties (General) tab. This can be particularly useful in disaster recovery situations when you need to rebuild the environment.

Full System Recovery

A full system restore is the process of restoring all files (including the operating system) and Oracle database files on a client computer after a catastrophic event.

A full system recovery of a Documentum client includes the following phases:

  1. PHASE I - Restoring Documentum Components
  2. PHASE II - Recovering the DB2 Database
  3. PHASE III - Restoring Storage Area and Full-Text Index Components

Related Topics

Disaster Recovery

Last modified: 3/1/2018 8:01:37 PM