IBM Support

APL2: What's New



Current information on product status for APL2 and Workstation APL2


APL2 for z/OS


November 2018 - Performance APAR PH04434

A performance APAR for mainframe APL2 affects the dyadic iota, member and without primitives. The existing special case for vectors of character vectors has been extended to also handle vectors of integer vectors. The special case uses a form of hashing to improve the search time. Improvements of up to a factor of 10 can been realized, depending on array size.

To obtain this update, z/OS customers can order PTF UI59486. VM customers can order PTF UI58487.


September 2017 - z/OS 2.3 Update

z/OS 2.3 became available in September, including new support for 8-character TSO User IDs. The former limit was 7 characters.

APL2 requires an update to handle the 8-character IDs when constructing dataset names. Customers should install PTFs UI45233 and UI45234 to obtain the changes. The PTFs, which have been available since March 2017, can be installed on any release of z/OS.

Note: The AP2TIUSR sample user exit is replaced by these PTFs. Local modifications to AP2TIUSR should be backed up before installing the PTFs.


Workstation APL2


April 2018 - Service Level 25

Workstation APL2 for Multiplatforms V2.0 Service Level 25 is available for AIX, Linux, Sun Solaris, and Windows.

Highlights of this service level include:

  • A Windows Session Manager option to automate print width.
  • Removal of internal usage of the APL2 Image font to avoid a Windows 10 issue with that font.
  • Fixes for user-reported problems in the interpreter and Session Manager.

A complete list of fixes included in this level will be found in the updated README (Unix systems) or Service Information (Windows systems) file.

November 2017 - Windows 10 Font Issue

After recent maintenance to Windows 10, the APL2 Image font does not display properly. The problem is not in APL2, but we use APL2 Image internally in several places, including the APL Assist bar.

A fix to APL2 to remove all internal usage of APL2 Image has been shipped in Service Level 25.

Until the problem in Windows is fixed, use of APL2 Image as your Session Manager font will not give good results. Select a different font with the Options->Font menu item.


This document is for general guidance only. All products referred to here are subject to availability. Sun and Solaris are trademarks of Sun Microsystems, Inc. Windows is a trademark of Microsoft Corporation. Linux is a trademark of Linus Torvalds.

Document information

More support for: APL2

Component: Not Applicable

Software version: 2.0, 2.2

Operating system(s): AIX, Linux, Solaris, Windows, z/OS, z/VM

Reference #: 2012321

Modified date: 04 December 2018