Chapter 10. Common Data Guard Issues

Data Guard administrators need to know methods to resolve some specific issues. These issues may originate from configuration changes, misconfiguration, or user errors. Another important point is the use of diagnostic data to identify these issues. Now we'll cover handling the most common of these Data Guard issues and the methods to access and use diagnostic data.

In this chapter, we will discuss the following topics:

• Recreating the standby control file

• Dealing with redo transport authentication problems

• Dealing with UNNAMED datafiles

• Closing a gap with RMAN incremental backups

• Fixing NOLOGGING changes in a standby database

• Turning on Data Guard tracing

• Gathering diagnostic data

Let's start with renewing the standby control file of a standby database.