The ncurrent expalin facility does that for you in the explain tables.
Look at the db2exfmt command and you can specify how to retrieve what you
need.
The first of the explain table EXPLAIN_INSTANCE has a primary key based on
timestamp so that the same package, section names can be kept by date.
Follows the PK on that table.
D:\SQLLIB\BIN>db2 describe table explain_instance

Column                             Type          Type
name                               schema        name
Length   Scale     Nulls
------------------------------         ---------         ------------------  
         --------     -----        ------
EXPLAIN_REQUESTER     SYSIBM    VARCHAR                 128     0
No
EXPLAIN_TIME                   SYSIBM    TIMESTAMP                10     0
No
SOURCE_NAME                    SYSIBM    VARCHAR                 128     0
No
SOURCE_SCHEMA                  SYSIBM    VARCHAR                 128     0
No
SOURCE_VERSION                 SYSIBM    VARCHAR                  64     0
No

HTH,  Pierre.