To configure the FASTPATHMATCH configuration option

CONNX for VSAM provides two configuration parameters to expedite or disable the VSAM alternate index file import search process.  The default settings for these parameters are optimal for the CONNX VSAM sample files and for the SCT VSAM master files.  If your installation does not implement VSAM alternate index files, you can change these parameters to improve the CONNX VSAM file import response time.

When enabled, the FASTPATHMATCH configuration parameter restricts the CONNX alternate index file name search logic to a two-character prefix based on the imported CICS file name. For example, all CONNX VSAM sample files are defined to the CICS RDO file with a three-character CNX prefix.  The CONNX sample VSAM KSDS equipment file is named CNXEQK.  The CICS file names for the two alternate indexes for this file are CNXEQI1 and CNXEQI2.  The default FASTPATHMATCH setting directs the CONNX VSAM alternate index search logic to start with CICS file names beginning with CN and to stop as soon as a different two-character CICS file name prefix is found.

  1. To disable the FASTPATHMATCH option and force a complete search of the RDO file, clear the screen and type:

NX01 FASTPATHMATCH 0
 

         The expected reponse is:
  

Entry Added (FASTPATHMATCH)=(0)

  1. To enable the FASTPATHMATCH option, clear the screen and type:

NX01 FASTPATHMATCH 1
 

        The expected response is:
  

Removing Configuration Entry (FASTPATHMATCH)             
Configuration Entry Successfully Removed. (FASTPATHMATCH)
Entry Added (FASTPATHMATCH)=(1)
 

         Or

NX01 FASTPATHMATCH
 

         The expected response is:
  

Removing Configuration Entry (FASTPATHMATCH)             
Configuration Entry Successfully Removed. (FASTPATHMATCH)
 

 CONNX for VSAM Configuration Options

IMPORTALTINDEXES

FASTPATHMATCH

REMARKS

Disabled

Disabled

Disables alternate index import logic: fastest setting.

Disabled

Enabled

Same as above.

Enabled

Disabled

Enables alternate index import complete search logic: slowest but most accurate setting.

Enabled

Enabled

Default setting: restricts alternate index import logic to CICS short file names with the same two-character prefix as the base CICS short file name. Fast but potentially incomplete. Optimal for CONNX sample and SCT master VSAM files.