Fast Path secondary index database maintenance enhancement

The Set Index Maintenance Off (SETI) statement suppresses index maintenance for any data entry database (DEDB). If a process that updates DEDB records does not access the DEDB through the secondary index database, updating the DEDB records simultaneously with the secondary index database is less efficient. It is more efficient to disable the secondary index maintenance, update the DEDB records separately, and then update the secondary index database. In this case, you might prefer using SETI statements to suppress index maintenance and later using vendor product tools or in-house applications to resynchronize the DEDB with its index database. If the SETI statement is used but you do not use resynchronizing tools, secondary index databases might become out of sync with its primary DEDB databases. With this enhancement, you can use FPSISETI=N in the Fast Path section of the DFSDFxxx member to disable the SETI control statement and to ensure that primary DEDB databases and its secondary indexes are synchronized.

Changes to installing and defining IMS

The new parameter, FPSISETI=, is added to FASTPATH section of the DFSDFxxx member.

Changes to troubleshooting for IMS

A new message DFS4723A is created to inform users of FPSISETI=N. Abend code 1060 is changed to be related to DFS4723A.

For a complete list of all of the new, changed, and deleted messages, and abend codes in IMS 15, see Message and code changes in IMS 15.

Documentation changes

The following table lists the publications that contain new or changed topics for the New function name enhancement. Publications that are not impacted by this enhancement are not included in the table.