The Steps of MAINTAIN ASF

MAINTAIN ASF › Usage › The Steps of MAINTAIN ASF

The Steps of MAINTAIN ASF

MAINTAIN ASF consists of the following steps which you can run separately or as a single operation:

Step	Description
IDMSTABX	Interprets the control statements Reads the database Writes index descriptors to the SYS003 file Writes sort control parameters to the SYSPCH file
SORT3	Sorts the contents of the SYS003 file and puts the results in SYS004.
IDMSDBL3	Erases old index structures, if there are any Builds the new index structures Establishes pointers for user-owned index sets, and puts themin the SYS005 file
SORT4	Sorts the contents of the SYS005 file, and puts the results in SYS006.
IDMSDBL4	Fills in prefix pointers for user-owned indexes

Each Step has Input and Output

This table describes the input and output files if MAINTAIN ASF is executed without the SORTEXIT and REUSE options. The effect of those options is shown under "JCL" later in this chapter.

Step	Input	Output
IDMSTABX	Control parameters from your submission of the utility The database	SYS003 contains index membership information SYSPCH contains sort parameters
SORT3	SYS003 from IDMSTABX SYS002 contains the sort parameters from IDMSTABX	SYS004 contains the sorted contents of SYS003
IDMSDBL3	SYS004 from SORT3	SYS005 contains prefix pointer information for user-ownedindexes SYSPCH contains sort parameters
SORT4	SYS005 from IDMSDBL3 SYS002 contains the sort parameters from IDMSDBL3	SYS006 contains the sorted contents of SYS005
IDMSDBL4	SYS006 from SORT4	SYSLST contains a summary of the results of the MAINTAIN ASF operation

Sort Output after Each Step

If you run MAINTAIN ASF a step at a time, you must use the sort parameters to sort the contents of the intermediate work files. You can use your own sort program or IDMSSORT.

Sort the intermediate work files as follows:

Sort name	File to sort	Sort order	Sort on	Begins at
SORT3	SYS003	Ascending	36 bytes	Byte 5
SORT4	SYS005	Ascending	28 bytes	Byte 5

z/VSE users: The sort parameters generated by IDMSTABX and IDMSDBL3 are not sufficient for stand alone sort programs running under z/VSE. If you want to use your own sort program, you must add "WORK=" parameters to specify more than one sort work file.