RDF/IMP and IMPX System Management Manual (RDF 1.3+)

Maintaining the Databases
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
6-8
Enscribe Databases
Partition Key Changes
If you change a key for any partition on the primary system, you must also change the
key for the corresponding partition on the backup system.
Table Purges
If you use the SQLCI PURGE command to purge a protected table from the primary
system, you must also purge the corresponding table from the backup system. You
should not purge a table on the backup system until you are sure RDF has completed all
processing on the table. The processing is complete when the RTD time is zero for the
updater process associated with the table’s volume. To check the RTD time, issue a
STATUS RDF command.
If you purge a table on the primary system, you must not re-create it on the primary
system until you are certain that the updaters have caught up with the MAT, and you
have purged and re-created the table on the backup system.
Enscribe Databases
For Enscribe databases, RDF replicates the following file-label modifications:
RDF does not replicate the following operations on files. If you perform any of these
operations on the primary system, you also need to perform the operation on the backup
system:
•
File-label modifications not in the preceding list
•
Partition key changes
•
Alternate-key file changes
•
File purges
To perform operations on Enscribe files that RDF does not replicate, follow these
procedures:
1. Stop application processing on the primary system.
2. Stop TMF on the primary system; wait for RDF to read the STOP TMF message in
the audit trail and stop itself.
3. Start TMF on the primary system so the operations on audited Enscribe files can be
performed.
CREATE Only when creating an audited file
ALTER
MAXEXTENTS
Only when increasing the number of extents of an audited file
PURGEDATA Only when purging data from an audited file