Library View Topics Framed Contents Revised Topics Previous Topic Next Topic Search Search ResultsPrevious Topic MatchNext Topic Match Notes List Notes Print Download No PDF Handheld DisconnectedHandheld ConnectedHelp

4.2.4 RESERVE Clause




X >_Workstation_> Under AIX, OS/2, and Windows, the RESERVE clause is not
X supported for line sequential files. It is treated as a comment for sequential, relative and indexed files. <_Workstation_<

The RESERVE clause allows the user to specify the number of input/output buffers to be allocated at run-time for the files.

If the RESERVE clause is omitted, the number of buffers at run time is taken from the DD statement when running under OS/390. If none is specified, the system default is taken.

If the file connector referenced by file-name-1 in the SELECT clause is an external file connector, all file control entries in the run unit that reference this file connector must have the same value for the integer specified in the RESERVE clause.

Previous Topic Next Topic © Copyright IBM Corp. 1991, 1998

IBM Library Server Copyright 1989, 2005 IBM Corporation. All rights reserved.





Return to library:   z/OS | z/OS.e | TPF | z/VSE | z/VM | IBM Hardware | IBM System z Redbooks
Glossary:   IBM terminology
Publications:   How to order publications
Readers:   Download IBM Library Reader | Download IBM Softcopy Reader | Download Adobe® Acrobat® Reader®
Library management:   Download IBM Softcopy Librarian
Contacts:   Contact z/OS


Adobe, the Adobe logo, Acrobat, the Acrobat logo, and Acrobat Reader are registered trademarks of Adobe Systems incorporated.