Listing Allocated Data Sets

Use the LISTALC command to list the names of data sets currently allocated to your prefix during the TSO/E session. You can also list attributes of these data sets by specifying operands with the LISTALC command. The list can include the data sets that were dynamically allocated and any data sets previously allocated for temporary use by the ALLOCATE command.

Using the LISTALC command you can display:

The data sets currently allocated to your prefix during the TSO/E session
The data definition name (ddname) associated with a data set (STATUS operand)
The disposition of a data set (STATUS operand)
The history of a data set (HISTORY operand). The history of a data set includes:
- The date the data set was created
- The date the data set will expire (retention period)
- Whether the data set is protected
- The organization of the data set (sequential or partitioned).
The names of the members of a partitioned data set (MEMBERS operand)
The fully-qualified name of a system-generated data set name (SYSNAMES operand)

When you see the list, data sets allocated to your terminal are followed by the word TERMFILE. If an asterisk precedes the data set name in the list, the data set is allocated but not currently in use.