IKJTSOxx (TSO/E commands and programs)

You can use IKJTSOxx to identify the commands and programs the system is to use. The IKJTSOxx member allows you to identify:
  • Authorized commands and programs.
  • Commands that a user cannot issue in the background.
  • APF-authorized programs that users may call through the TSO/E service facility.

If your installation is using the virtual lookaside facility (VLF) and plans to use the TSO/E VLFNOTE command, add VLFNOTE to this parmlib member as an authorized command, using the AUTHCMD NAME parameter. See z/OS MVS Programming: Authorized Assembler Services Guide for information about when to use the VLFNOTE command.

IKJTSOxx also allows you to specify the defaults for the TSO/E ALLOCATE, SEND, RECEIVE, TRANSMIT, CONSOLE, and TEST commands.

By defining the SHR option on the ALLOCATE parameter, you can change the system default for the disposition of data sets from OLD to SHARE (SHR).

The TRANSREC statement allows you to specify the characteristics for the data to be transmitted or received.

The TEST parameter allows you to specify the installation-written test subcommands and the names of TSO/E commands that are to be allowed to execute under the TEST command. These commands are in addition to those allowed by default. Through the SEND statement, you can specify the data set into which the SEND command is to store messages. The system checks that named data set when the user issues the LISTBC command to retrieve stored messages. The SEND statement, with the MSGPROTECT keyword, also allows you to protect mail from being seen by users who do not meet security criteria. By itself, setting MSGPROTECT(ON) causes mail to be stored in a mail log named 'logname.userid', rather than 'userid.logname'. By combining MSGPROTECT(ON) with RACF® 1.9, you can request that the system compare the level of security of the mail received with the level of security of the recipient.

For information about setting up RACF 1.9 to work with MSGPROTECT(ON), see z/OS Security Server RACF Security Administrator's Guide.

To use IKJTSOxx, copy the default from SYS1.SAMPLIB(IKJTSO00) to SYS1.PARMLIB(IKJTSOxx). You can then update the member to meet the needs of your installation.