Issuing commands from IMS terminals

You can enter all Db2 commands except START DB2 from either an IMS terminal or program. The terminal or program must be authorized to enter the IMS /SSR command.

About this task

Begin general-use programming interface information. An IMS subsystem can attach to more than one Db2 subsystem, so you need to add a prefix. Commands that are directed from IMS to Db2 with a special character that identifies which subsystem to direct the command to. That character is called the command recognition character (CRC). It is specified it when you define Db2 to IMS, in the subsystem member entry in IMS.PROCLIB.

Tip: You can use the same character for the CRC and the command prefix for a single Db2 subsystem. However, to do that, you must specify a one character command prefix. Otherwise you cannot match these identifiers.

Most examples in this information assume that both the command prefix and the CRC are the hyphen (-) . However, if you can attach to more than one Db2 subsystem, you must issue your commands using the appropriate CRC. In the following example, the CRC is a question mark character:

Example

You enter the following command:

/SSR ?DISPLAY THREAD

Db2 returns the following messages:

DFS058  SSR COMMAND COMPLETED
DSNV401I ? DISPLAY THREAD REPORT FOLLOWS -
DSNV402I ? ACTIVE THREADS -
⋮

End general-use programming interface information.