RMAN Tracing

RMAN Tracing allows us the capability to get wom insight into what RMAN is doing behind the scenes so to speak.

Trace an RMAN Session

Trace an RMAN session to a trace file using the trace=/tracefilename.trc as part of the rman execution. Then in the RMAN execute set the debug on.

Example:

rman target username/password@target catalog username/password@catalog trace=/tmp/rman_test.trc

RMAN> run
{debug on;
report obsolete;
debug off;
}


Trace via the RMAN Channel

Another way to trace RMAN activity would be to configure the trace when configuring the RMAN channel.

1. Make sure timed_statistics = true for all performance testing.

2. set the NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS'.

3. Configure the Channel with Trace/Debug options

trace 1 - general trace info for skg and sbt
trace 5 - verbose channel tracing of skg and sbt calls

CONFIGURE CHANNEL DEVICE TYPE
DISK DEBUG=5 TRACE 1;

or

CONFIGURE CHANNEL DEVICE TYPE SBT PARMS "ENV=(....) DEBUG=5 TRACE 5;

Note: (Trace is only useful for tape backup and restore tracing)