CHK LPCK

Under the Full Checking technique, PCP can validate the logical parent concatenated keys (LPCKs).

It validates that both the key and the RBA of the logical parent segment match the LPCK and the logical parent pointer of the logical child segment. The following restrictions apply to the LPCK validation:

  • The logical parent must be a root segment.
  • The logical parent and the logical child must be defined as fixed length and must not be compressed.
  • The logical child must have a direct LP pointer.
  • The LPCK must be physically stored in the logical child segment.

This validation requires additional sort work areas (SYMBWKnn), which PCP dynamically allocates if you omit the DD statements.

Use the CHK LPCK option to control whether PCP performs this validation.

Note

This option is not available when you use the Hash Checking technique.

Uses

You can set the CHK LPCK option at the following levels:

  • Global options module
  • Generated JCL
  • GLBL control statement
  • CHECK control statement

ISPF panel field

Validate LPCK in LC Segments

PCPSYSIN keyword

CHK(LPCK(value))

Values

Specify one of the following values:

  • YES or Y

    Validate LPCKs.

  • NO or N

    Do not validate LPCKs.

Default

N

 

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