Defining Db2 to z/OS for adding data sharing members

After you run job DSNTIJMV, you must define Db2 in SYS1.PARMLIB.

Before you begin

Enable data sharing on the originating member, as described in Enabling Db2 data sharing.

Job DSNIJMV creates new subsystem definitions in the IEFSSNxx member of the SYS1.PARMLIB library.

To define Db2 to z/OS:

Complete one of the following actions:

IPL z/OS.
During thez/OS IPL, message DSN3100I appears on the z/OS console, stating that Db2 is ready for the START DB2 command.
Use the z/OS command SETSSI to dynamically add the new Db2 and IRLM subsystems. For example, the following two commands can be used to add subsystems for Db2 and IRLM to MVS3:
```
RO MVS3,SETSSI ADD,SUB=DB3A,INITRTN=DSN3INI,INITPARM='DSN3EPX,-DB3A,S,DB0A'
RO MVS3,SETSSI ADD,SUB=DJ3A
```
Recommendation: Add z/OS to the IEFSSNxx member so that it can be used on a subsequent IPL.