This topic shows how to define a PDSE. The DSNTYPE keyword defines either a PDSE or PDS. The DSNTYPE values follow: LIBRARY (defines a PDSE) PDS (defines a partitioned data set) To define PDSE data set types, specify DSNTYPE=LIBRARY in a data class definition, a JCL DD statement, the LIKE keyword, the TSO ALLOCATE command, or the DYNALLOC macro.

The acronym PDSE stands for partitioned data set extended. A PDSE consists of a directory and zero or more members, just like a PDS... But there are some differences between the two. A PDSE can be created with JCL, TSO/E, and ISPF, just like a PDS, and can be processed with the same access methods. PDSE data sets are stored only on DASD, not on ...

This topic shows how to use the SPACE JCL keyword to allocate primary and secondary storage space amounts for a PDSE. The PDSE directory can extend into secondary space. A PDSE can have a maximum of 123 extents. A PDSE cannot extend beyond one volume.

It can be created with JCL, TSO/E and ISPF just like a PDS and can be processed with the same access methods. The directory can expand automatically as needed, up to the addressing limit of 524,286 members. It also has an index which provides a fast search for member names.

Learn the latest PDSE functions Use PDSEs for storing programs Compare PDS and PDSE capabilities

May 26, 2007 · PDSE data sets have several features that can improve user productivity and system performance. The main advantage of using a PDSE over a PDS is that a PDSE automatically reuses space within the data set without the need for anyone to periodically run a utility to reorganize it.

Convert load modules in a partitioned data set to program objects in a PDSE when copying a partitioned data set to a PDSE. Convert a partitioned data set to a PDSE or a PDSE to a partitioned data set.

IEBCOPY is a data set utility that is used to copy or merge members between one or more partitioned data sets or partitioned data sets extended (PDSEs). The copying can be full copy or partial copy. IEBCOPY used to create a backup of a partitioned data set into a sequential data set and to copy members from the backup into a partitioned data set.

Jul 6, 2007 · PDSE:A system-managed data set that contains an indexed directory and members that are similar to the directory and members of partitioned data sets. A PDSE can be used instead of a partitioned data set.

Jun 25, 2021 · // in dd disp = shr, dsn =pdse. old.d37 //out dd disp = shr, dsn =pdse. new // sysin dd * copy indd= ((in,r)),outdd=out