RDF/IMP, IMPX, and ZLT System Management Manual

Installing and Configuring RDF
HP NonStop RDF/IMP, IMPX, and ZLT System Management Manual—524388-002
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Online Installation and Initialization Without Stopping
TMF
and you must purge the existing file. The updater will continue to report the error until
you have purged the file.
Stop-RDF-Updater Records
Stop-RDF-Updater records in the MAT are associated with committed NonStop
SQL/MP DDL operations performed on the primary system with the SHARED ACCESS
option. Although such operations can be performed on the primary system without
stopping your applications, they must be performed manually on the backup system
after all updaters have shut down in response to the same Stop-RDF-Updater record.
As a general rule, you should not initialize RDF to an inittime if you recently
performed a NonStop SQL/MP operation with SHARED ACCESS on the primary
system. For example, suppose you have a NonStop SQL/MP table (tableA) that
contains the range of keys A through Z and you just moved its partition boundary such
that tableA now contains only the keys A through M and a new table (tableB) contains
the keys N through Z. Suppose also that you performed this operation manually on the
backup system.
If you then initialize RDF to a point in the MAT prior to the Stop-RDF-Updater record
associated with the partition boundary change and an updater encounters audit
information associated a key N through Z, the updater will report an error because it
will try to apply the audit information to tableA (which used to contain it, but now does
not), and the audit information will not be applied to the backup database. In this
particular case, the database is not corrupted, but data corruption could happen for
other NonStop SQL/MP DDL SHARED ACCESS operations.
If you did recently perform a NonStop SQL/MP operation with SHARED ACCESS on
the primary system and you want to initialize RDF to a inittime , you should wait
before issuing the command until you can specify an inittime that includes the three
minutes added by RDFCOM so that the starting position in the MAT is after the Stop-
RDF-Updater record.
As a precaution, if RDFCOM encounters a Stop-RDF-Updater record during its
backward search of the MAT, it issues a warning message asking if you want to
proceed with initialization. Note that if you continue the operation, the updaters will shut
down when they encounter the Stop-RDF-Updater record, at which time you should try
to perform the NonStop SQL/MP DDL operation manually again on the backup system.
TMF Shutdown Records
TMF shutdown records in the MAT do not cause a problem, except that RDF shuts
down and you must then restart it.