How Db2 identifies packages at run time

The Db2 precompiler or Db2 coprocessor identifies each call to Db2 with a consistency token. The same consistency token identifies the DBRM that the SQL statement processor produces and the package to which you bound the DBRM.

When you run the program, Db2 uses the consistency token in matching the call to Db2 to the correct DBRM. Usually, the consistency token is in an internal Db2 format. You can override that token if you want.

You also need other identifiers. The consistency token alone does not necessarily identify a unique package. You can bind the same DBRM to many packages, at different locations and in different collections, and you can include all those packages in the package list of the same plan. All those packages will have the same consistency token. You can specify a particular location or a particular collection at run time.