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RDBPROD: Logging Options for Rdb Hot Standby (HS) Detached Processes (Doc ID 99169.1)

Last updated on MAY 03, 2018

Applies to:

Oracle Rdb Server on OpenVMS - Version 7.0 and later
HP OpenVMS Itanium
HP OpenVMS Alpha
HP OpenVMS VAX

Purpose

Hot Standby was introduced in Oracle Rdb V7 for mission critical and disaster recovery situations. Oracle recommends you run Oracle Rdb V7.0.2.0 as a minimum Oracle Rdb version to implement a Hot Standby strategy. For maximum performance benefits you should run the latest version of Oracle Rdb.Oracle Rdb uses detached server processes to perform Hot Standby (HS) database functions. The purpose of this article is to explain how to optionally enable logging features for the HS detached processes (LCS, ABS, and LRS) to aid in troubleshooting and analysis. These logicals were introduced in Oracle Rdb V7. Oracle Rdb recommends that the logicals in this article remain permanently defined as /SYSTEM logicals. Alternately, beginning in Oracle Rdb 7.2.1, output or log file names for a number of database server processes are now also controlled by optional database attributes so that only the selected database is effected. This article only discusses HS logging options.

For more information regarding Hot Standby, refer to the Oracle Rdb7 and Codasyl DBMS Guide to Hot Standby Databases and also the various ECO and MUP release notes beginning with Oracle Rdb version 7.0.2.0.

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