TMF Operations and Recovery Guide (G06.26+)

HP NonStop TMF Operations and Recovery Guide—522417-003
6-1
6 The TMF Catalog
The TMF catalog records audit and online dump media: it specifies where all dumped
files reside and which dump media are available for reuse. This section describes how
the TMF catalog functions and the operations you perform to maintain it. The following
topics are covered:
You can use the TMFCOM command interface to perform the TMF catalog operations
described in this section.
Overview of Catalog Operation
Under normal circumstances, the TMF catalog supports dump activities as follows:
1. You select the media (tape, disk, or both) on which you want to store your audit
and online dumps.
2. If you use tape as a medium, define a set of scratch tapes by issuing a series of
ADD TAPEMEDIA commands. Directions for this operation are described in
Adding Tape Media to the Catalog on page 6-13. If you use disk as a medium,
periodically ensure that you have enough disk space available for the dumps and
keep track of where the dump files are located. You increase disk space for dumps
through the DUMPS FILES and ALTER AUDITDUMPS commands, described in
Making Online Dumps on page 5-2 and Solving Audit Dump Problems on
page 4-4, respectively.
3. An audit dump is automatically made every time audit-trail rollover occurs and
audit dumping is turned on. This audit information is stored on one or more of the
scratch tapes or disk files defined in the TMF catalog. For tape only, depending on
the number of copies configured for the audit dump process, one, two, or three
copies are made. Each audit dump has a serial number; serial copies have unique
serial numbers, while parallel copies share a serial number.
4. Periodically, you perform online dumps by issuing the DUMP FILES command.
This audit information is stored on one of the scratch tapes or disk volumes defined
in the TMF catalog. Each online dump has a unique serial number.
5. When the number of generations of particular online dump files in the catalog
exceeds the RETAINDEPTH value, the earliest is changed from assigned status to
released status. The RETAINDEPTH value is explained in Table 1-4 in Section 1,
Overview of TMF Maintenance and Recovery and in Changing the RETAINDEPTH
Value on page 6-6. Dump status is explained in Changing the State of a Dump on
page 6-5.
Topic Page
Overview of Catalog Operation 6-1
Maintaining the TMF Catalog 6-2
Maintaining Tape Media 6-11