RDF/IMP and IMPX System Management Manual (RDF 1.4+)

Installing and Configuring RDF

HP NonStop RDF/IMP and IMPX System Management Manual—524388-001

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Stopping the Software

After you stop all applications protected by TMF, stop TMF itself by issuing a STOP

TMF command through the TMFCOM interactive interface. (You only need to stop your

applications and TMF if you are going to use the TIMESTAMP parameter of the INIT

RDF command or if you are going to omit the timestamp parameter in all forms). For

information about issuing this and other TMFCOM commands, see the HP NonStop

TMF Reference Manual.

Preparing the Tables and Files

Now prepare your tables and files.

Separating NonStop SQL Tables

It is recommended that you avoid registering NonStop SQL tables protected by RDF in

the same catalogs as tables that are not protected by RDF. Separating protected tables

from unprotected ones simplifies the comparison of primary system catalogs with

backup system catalogs.

Compressing Audit Data for Tables and Files

Although not required by RDF, using the AUDITCOMPRESS file attribute will enhance

RDF performance. TMF compresses the audit data generated for NonStop SQL tables

and Enscribe files for which AUDITCOMPRESS is on. For applications involving

updates of only a few bytes to large existing rows or records, this audit compression

greatly reduces both the amount of audit information the extractor must read and send

to the receiver and the corresponding amount of RDF traffic on the communications

line.

For NonStop SQL tables and indexes, AUDITCOMPRESS is the default. If the value

has been changed to NO AUDITCOMPRESS for a table, you can use an ALTER

TABLE command, entered through the NonStop SQL Conversational Interface

(SQLCI), to reset the default value:

ALTER TABLE table-name AUDITCOMPRESS;

To set the AUDITCOMPRESS attribute for an Enscribe file, use the File Utility Program

(FUP) to enter an ALTER command:

FUP ALTER filename, AUDITCOMPRESS

Preparing the Backup System

Before starting RDF, you need to copy every database, program, and file that the

primary system applications use to the backup system so that the backup system can

take over in the event of a primary system failure. In the backup copies, you need to

change any occurrences of the primary system name to the backup system name.

RDF replicates the database; you should use the HP NonStop Autosync product to