Overview

IBM's Global Resource Serialization (GRS) can also be used to synchronize databases. It is particularly important if you are using shared databases.

Using IBM's GRS in conjunction with the reserve conversion resource definition has the advantage of significantly enhancing performance. This is because not all of the DASD unit will be blocked, but only the datasets actually used by BQL.

BQL uses the macro RESERVE in connection with the major name BETABQL.

Example of an GRSRNLxx* entry:

+----------------------------------------------------------------+
|/**************************************************************/|
|/* RESERVE CONVERSION RESOURCE NAME LIST – RNLDEF STATEMENTS */|
|/*(THE DEFAULT RESERVE CONVERSION RESOURCE NAME LIST IS EMPTY)*/|
|/**************************************************************/|
|RNLDEF RNL(CON) TYPE(GENERIC) |
|QNAME(BETABQL) |
+----------------------------------------------------------------+

* – xx stands for a suffix member

Further information

For more information on GRS, see the appropriate IBM manuals.