Use the SYNC command to initialize the broadcast data set and synchronize it with either the UADS, the TSO/E segment of the RACF® data base, or both.

When issued from a batch environment, the SYNC command accesses the broadcast data set via the SYSLBC DD name. If no SYSLBC DD statement is specified in the job, the active broadcast data set will be used by the command. If a SYSLBC DD statement is specified in the job, the referenced data set will be used as the broadcast data set.

TSO/E copies the user IDs from the UADS and/or the TSO/E segment of the RACF data base into the broadcast data set.

SYNC also formats the NOTICES section of the broadcast data set to reserve room for the maximum number of messages. (Use the IKJBCAST macro to specify the maximum number of messages.)

If you use SYNC when the broadcast data set exists, TSO/E deletes all MAIL from the data set.

In addition, if you use SYNC after you change the message limit for the NOTICES section and the broadcast data set exists (is initialized), the data set is cleared (all MAIL and NOTICES are deleted).

The syntax of the SYNC command is:

• SYNC is an authorized command.
• You require ACCOUNT authority to issue the command.
• To synchronize the broadcast data set with the RACF data base, RACF must be installed and active.

BOTH

Synchronize the broadcast data set with both the TSO/E segment of the RACF data base and SYS1.UADS, provided that the SYS1.UADS data set was previously allocated to ddname SYSUADS. If it was not previously allocated, the broadcast data set is synchronized with the TSO/E segment of the RACF data base only.

RACF

Synchronize the broadcast data set only with the TSO/E segment of the RACF data base

UADS

Synchronize the broadcast data set only with SYS1.UADS