RDF System Management Manual for H-Series RVUs (RDF 1.8)

UPDATERTXTIME tx-time
specifies the maximum transaction duration (in seconds, from 10 to 300) for all updater
processes. The default is 60 seconds.
RDF updaters operate in transaction mode. Updater transactions are essentially long-running
transactions that pin audit-trail files on the backup system and can affect the duration of
backout operations if an updater transaction aborts for any reason.
The default value is recommended for RDF environments with heavy updater activity
(aggregate updater throughput greater than 300 kb/second). Raising the tx-time in such
environments could adversely affect TMF performance on the backup system.
In RDF environments with low to moderate updater activity and where no other transaction
activity is occurring on the backup system, you could raise the tx-time without affecting
TMF performance on the backup system.
UPDATERRTDWARNING rtd-time
specifies the RTD warning threshold (in seconds, 0 or greater) for all configured updaters.
The default is 60 seconds.
This threshold is used by the STATUS RTDWARNING command to determine which
updaters, if any, are to be included in its display. Besides the monitor process (and perhaps
the extractor), the display includes only those updaters, if any, whose RTD exceeds the
configured updater RTD warning threshold.
UPDATEROPEN access-mode
specifies the access mode (PROTECTED or SHARED) that updaters use when opening
database files. The default is PROTECTED.
Protected access is strongly recommended at all times, except when you specifically want to
take online dumps or do reloads of the backup database with the updaters running. After
the dumping or reloads have finished, you should change the access mode from SHARED
back to PROTECTED.
To change the configured updater access-mode:
1. Issue a STOP UPDATE command.
2. Issue an ALTER RDF UPDATEROPEN command specifying the desired access mode.
3. Issue a START UPDATE command.
SOFTWARELOC $volume.subvolume
specifies where the RDF software is installed. The default is $SYSTEM.RDF.
NETWORK {ON | OFF}
specifies whether or not you are configuring an RDF network.
When set to OFF (the default value), RDF takeover operations execute and database
consistency is not guaranteed for transactions spanning more than one RDF backup database.
When set to ON, the RDF subsystem guarantees database consistency across multiple RDF
backup systems configured within an RDF network.
When set to ON, you must either have the NETWORKMASTER attribute for the same system
also set to ON or have another system configured as the network master.
NETWORKMASTER {ON | OFF}
specifies whether the particular system is the master of the RDF network. Each RDF network
has one, and only one, network master.
When set to OFF (the default value), the particular system is not the network master.
When set to ON, the particular system is the network master of the RDF network. When this
attribute is set to ON, the NETWORK attribute must also be set to ON.
RDFCOM Commands 215