Danke für die Antwort!

Ich habe gerade mal auf der IBM Seite nach einem entsprechenden PTF gesucht:

Folgendes könnte wohl das richtige sein:
DESCRIPTION OF PROBLEM FIXED FOR APAR SE17744 :
-----------------------------------------------
The program static storage is increased by 32 MB when the
UNREF compiler option is specified, although the XML
special registers are not referenced.

CORRECTION FOR APAR SE17744 :
-----------------------------
Checking is added to ensure program static storage will not be
increased by 32 MB when the *UNREF option is specified, if the
XML special registers are not referenced and XML PARSE is not
used.

CIRCUMVENTION FOR APAR SE17744 :
--------------------------------
Compile without specifying the *UNREF compiler option or
compile specifying TGTRLS(*PRV) if the XML special registers
are not referenced and XML PARSE is not used.

Dieses werden wir mal testen.

Gruß Matthias