Changing the allocation of the broadcast data set

You may want to change the allocation of the broadcast data set, for example, to change its data set attributes, its size, or its location.

To reinitialize the new broadcast data set, you must synchronize it with an existing UADS data set, the RACF® data base, or both. Use the SYNC command, or the SYNC subcommand of the ACCOUNT command, with operand BOTH, RACF, or UADS to do so. This will add the current list of authorized users to the new broadcast data set.

You can allocate a new broadcast data set, with either a name different from the current broadcast data set or the same name as the current broadcast data set but residing on a different volume. To do this, perform the following steps:

Note the DCB information from the existing broadcast data set.
Delete or uncatalog the existing broadcast data set if it has the same name as the new broadcast data set.
Allocate the new broadcast data set, modifying the DCB information as needed.
Reinitialize the data set.
Switch to the new broadcast data set.

You can allocate a new broadcast data set, with the same name as the current broadcast data set, on the same volume. To do this, perform the following steps:

Note the DCB information from the existing broadcast data set.
Allocate a new broadcast data set with a different name (for example, SYS1.NEWBROD), modifying the DCB information as needed.
Delete the current broadcast data set.
Rename the new broadcast data set to the name of the current broadcast data set.
Reinitialize the data set.

Restriction: Failure to follow these procedures will cause unpredictable results with the use of the broadcast data set. This is because the data set is accessed through the basic direct access method; never copy or move this data set.