Business Value
The SKIPLOAD URT RANGES feature allows CA Datacom CICS Services to shorten startup time by eliminating certain specified URT ranges because they do not exist in the site configuration. Many users want to match DBID numbers with URT numbers. Therefore, the MAXURT can be high. SKIPLOAD reduces the number of attempted loads by telling CA Datacom CICS Services to skip loading certain ranges of URTs for which they have not been created.
Additional Considerations
SKIPLOAD is beneficial if you want to use DBCVTPR DYNPPT=YES with the CICS Program AUTO install using modeling.
By adding new SKIPLOAD macros or multiple macros to the DBCVTPR, you can specify the range or ranges of URTs to skip during startup when all URTs up to the MAXURT value are loaded. More than one can be specified in a DBCVTPR assembly. Place them immediately after the last DBCSID macro. If no DBCSID macros exist, placement is immediately following the DBCVTPR macro in the DBCVTPR assembly.
Important! Allow some extra entries for DQRY dynamic URT generation.
The following example demonstrates how to reduce the attempted URT loads from 4025 to 162 in a CICS Program auto install environment. The startup time is greatly reduced while saving CICS CSD definition time. SQL was added with the DQRY DQL mode to show how to allow for extra URT entries for DYNAMIC URT generation.
A service bureau has four clients. Each client requires their own MUF and set of DBIDs. The first site is the bureau and uses CA Datacom SQL and DQRY DQL mode and bases 1-30.
The service bureau has 25 SQL tables in the SQL DBID. This bureau is using DBID remapping by 1000 for each additional client. Therefore, client 3 DBIDs in CICS are 3021-3059, which are mapped to 21-59 in MUF 4. DBIDs and URT IDs match. The site would need to leave 25 additional open URT slots for dynamic URTs for DQRY to access those tables in DQL mode. In this case, we assume that the DBIDs and SQL table are fairly stable meaning that new SQL tables and new bases are rare over time.
Results would be as follows:
DBCVTPR MAXURT=4025 DBCSID SIDNAME=DEFAULT,USERS=17,CONNECT=P DBCSID SIDNAME=SIDMUF2. USERS=4,CONNECT=D DBCSID SIDNAME=SIDMUF3, USERS=9,CONNECT=A DBCSID SIDNAME=SIDMUF4, USERS=6,CONNECT=A SKIPLOAD SKIP_LOAD_FROM=56,SKIP_LOAD_TO=999 * skip over 25 entries for dynamics SKIPLOAD SKIP_LOAD_FROM=1151,SKIP_LOAD_TO=2019 SKIPLOAD SKIP_LOAD_FROM=2041,SKIP_LOAD_TO=3019 SKIPLOAD SKIP_LOAD_FROM=3060,SKIP_LOAD_TO=4019
The number of attempted loads is reduced from 4025 to 162 and saves considerable startup time.
Note: URTs 1000 through 1020 were not skipped because CA products can use them.
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