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COMPRESS

Use the COMPRESS keyword to compress data segments before the segments are inserted to a DEDB.

You must be using a compression product where compression is controlled by the DBD. If you are using a compression product where compression is controlled by something other than the DBD, this keyword has no effect.

Related topic

Keywords

Use

COMPRESS is an optional keyword for the following commands:

  • RELOAD
  • REORGANIZE
  • UNLOAD
Warning

Important

The COMPRESS keyword can be used with the REORGANIZE command only if you are running BMC Software’s BMC AMI Data Packer for IMS product. Fast Path Reorg/EP will use the keyword value SELECT_UOW=ALL to ensure that all segments are reorganized and recompressed.

Related keywords

  • EXPAND
  • SELECT_UOW

Syntax

 COMPRESS=<parameter>
COMPRESS=(<parameter1>, <parameter2>, ..., <parametern>)

Parameters

Specify one or more of the following parameter values:

Value

Description

NO (default)

Do not invoke compression.

YES

Compress the data before the segment is processed.

1-character to 8-character segment name

Compress only the specified segment or segments. This value can be used more than once to specify specific segments using the (parameter1,parameter2, ..., parametern) syntax shown above.

Warning

Important

If you request compression by specifying either COMPRESS=YES or COMPRESS=segment name(s), the compression routine must be present in the appropriate library. Refer to the DD statements IMSRESLB, OLDRESLB, and STEPLIB.

Default

COMPRESS=NO

Alias

CMP

 

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Fast Path/EP products reference information 4.1