Chapter 10 Troubleshooting MultiSite Operations

This chapter describes common situations in which running a MultiSite command produces an unexpected result, sometimes accompanied by a warning or error message. The situations fall into these categories:

• Expected conditions occur because certain inconsistent changes at different replicas cannot be avoided. In many cases, a MultiSite operation resolves the inconsistency, so you need not take any action.

• Recoverable errors are user errors, hardware glitches, and other problems that you resolve by performing a recovery procedure.

• Serious errors are problems that may require assistance from Rational Technical Support.

The organization of the descriptions follows the general MultiSite data flow: from replica creation through the phases of replica synchronization-export, transport, and import. This chapter also describes replica restoration and replacement.

For information about changing mastership, see Chapter 8, Managing Mastership. For information about mastership request errors, see Chapter 9, Implementing Requests for Mastership.