SHDWHLQ keyword

The SHDWHLQ keyword specifies the data set name prefix for the shadow data sets.

Functions that support this keyword
Image Copy function
Statements that support this keyword
  • GLOBAL statement
  • GROUP statement
  • IC/AIC statement
  • CIC/ACIC statement
Site default option
Supported
Related keyword
Format
Read syntax diagramSkip visual syntax diagramSHDWHLQ= hlq
hlq
The data set name prefix for the shadow data sets for the Image Copy function, or is used to set a value in &SHDWHLQ, which is used by the SHDWDSN keyword.
Default value
None.
Usage notes
  • MVS naming convention requires that a generated shadow data set name contain 44 or fewer characters:
    • When you use &SHDWHLQ on the SHDWDSN keyword, specify a shadow data set prefix containing 44 or fewer characters.
    • When you do not use the SHDWDSN keyword, specify a shadow data set prefix containing 21 or fewer characters. This prefix is used as the high-level qualifier of the data set name as follows:
      • When SHDWHLQ is specified, shdwhlq.SHDW.dbdname.ddname
      • When SHDWHLQ is not specified, SHDW.dbdname.ddname
  • This prefix must conform to the normal data set naming standards; it can include periods, but must not end with a period.
  • If this keyword is left blank, the shadow data set name prefix is not assigned.