Index scan utility
This section provides information about the capabilities and use of the optional BMC AMI Fast Path Indexer for IMS scan (XSCAN) function. This function is executed by a command-driven utility that lets you scan a Fast Path primary DEDB to locate index source segments and then produce an output data set containing index information.
Note
All topics in this section apply to both PFX indexes and IBM native indexes, except where noted.
By using the command-driven XSCAN utility, you can scan a single area or multiple areas in a primary DEDB in offline or online mode.
BMC AMI Fast Path Indexer for IMS executes an online scan in an interactive Fast Path (IFP) region.
BMC AMI Fast Path Indexer for IMS provides the XSCAN command, the IX subcommand, and the associated keywords. The XSCAN command (when used with the IX subcommand and associated keywords) lets you scan a single area or multiple areas in a primary DEDB to locate index source segments for a defined index and then produce an output data set containing index information. This output data set can be used as input into the build, verify, and resynchronize (can only process PFX indexes) utilities.
This section contains the following topics:
- XSCAN function inputs and outputs
- Performance considerations for the XSCAN function
- DBRC considerations
- Index XSCAN command language
- Selecting the database and areas
- Allocating the source area data set
- Specifying secondary index databases to be scanned
- Allocating the XSCAN data set
- Sorting index information for the XSCAN function
- Sample XSCAN command scenarios
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