RDF System Management Manual

Maintaining the Databases
HP NonStop RDF System Management Manual—524388-003
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, and you have purged
and re-created the table on the backup system.
For NonStop SQL/MP and NonStop SQL/MX databases, RDF replicates the following
file-label modification:
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
To perform operations on Enscribe files that RDF does not replicate, follow these
procedures:
1. Stop application processing on the primary system.
PURGEDATA
CREATE Only when creating an audited file
ALTER
MAXEXTENTS
Only when increasing the number of extents of an audited file
PURGE Enscribe files only (if REPLICATEPURGE is enabled)
PURGEDATA Only when purging data from an audited file