HP B6960-90078 manual Recovering the IDB, Overview of IDB Recovery Methods

Managing the Data Protector Internal Database

Recovering the IDB

Recovering the IDB

When Is Recovery	IDB recovery is needed if all or some of the IDB files are not available or
Needed?	are corrupted.
	There are three levels of IDB issues, each with its own techniques for
	repair:
	•	Troubleshoot the IDB problems that are caused by OS configuration
		issues, such as not mounted filesystems, nameservice problems, and
		so on. Refer to the troubleshooting section “Troubleshooting the IDB”
		on page 592.
	•	Omit or remove non-core parts (binary files or filenames part) of the
		IDB that contain problems. This is possible if the identified level of
		IDB corruption is minor or major (meaning the corruption is not in
		the core part of the IDB).
	•	Perform a complete recovery. This consists of restoring the IDB and
		updating information that has been modified since the last IDB
		backup. This is a must if the identified level of IDB corruption is
		critical (meaning the corruption is in the core part).
Complete	Complete recovery consists of two phases:
Recovery	1.	IDB restore, which gets the IDB to the last (available) consistent
		state.
	2.	Updating the IDB from the last consistent state up to the last
		moment when the IDB was still operational.

Depending on how well you prepared for IDB recovery before problems occurred (availability of IDB recovery file, IDB backup, original device and transaction logs), the recovery procedure can differ. If all these are available, you can use a very convenient IDB recovery method, guided autorecovery.

Overview of IDB Recovery Methods

Several recovery methods are available for recovering the IDB. Depending on the identified level of corruption, your requirements, and the availability of the IDB recovery file and the original device and transaction logs, the recovery procedure can differ.

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