EATTR parameter

Connect:Direct® for z/OS® support for EAV includes support for the EATTR data set attribute.

EATTR has two valid values:
  • OPT - (optional) the data set can have extended attributes. If it is allocated on an EAV, it is biased towards being allocated in CMS.
  • NO – the data set cannot have extended attributes. If it is allocated on an EAV, it is allocated in TMS.
In IBM Connect:Direct for z/OS, the EATTR value can come from a number of places. When it is specified in more than one place, this order of precedence is used:
  1. EATTR (in COPY statement) or SYSOPTS EATTR.
  2. TYPE when the TYPE record contains an EATTR.
  3. LIKE or SYSOPTS LIKE (dataset attribute).
  4. DATACLAS or SYSOPTS DATACLAS.
  5. TYPE when the TYPE record contains a DATACLAS.
  6. The COPY FROM dataset's EATTR setting (propagation).
  7. Otherwise, if an EATTR value is not specified when a data set is created, the system uses a default behavior equivalent to OPT for VSAM, and NO for non-VSAM.