Starting DTST

This topic describes the methods of starting DTST and gives examples.

Before you begin, if you need to modify storage, verify with your system programmer that you have the authority to modify CICS® key storage, USER key storage, or both. "Authorizing DTST transaction to modify storage" in IBM® z/OS® Debugger Customization Guide describes the steps the system programmer must do to authorize you to modify CICS key storage, USER key storage, or both.

You can start the DTST transaction with or without specifying a base address. A base address can be any of the following items:

• A literal hexadecimal number (for example, 45CB00)
• A 64 bit address (for example, 48_40B00000)
• The name of a program (for example, MYPGM)
• An offset calculation or indirection (for example, 45CB00+40)

You can also specify that DTST take a specific action when it starts. You specify an action with one of the following characters:

• P, which means to page forward or backward.
• S, which means to search through storage until a specific target is found.

Syntax of the DTST transaction describes all the parameters.