Solution : https://service.sap.com/sap/support/notes/820325 (SAP Service marketplace login required)
Key words : 
profile parameter             dbs/db4/alternate_qaqqinilib = <my_alternate_lib>            note, comment field qqtext describes valid values, update <my_lib>/qaqqini set qqval = '<my_value>', transfer dependent trigger programs correctly, ibm support generally recommends setting, dbs/db4/qaqqinilib = <my_qaqqini_lib> configuring, query options file <lib>/qaqqini, temporarily avoid database errors, overcome unrequired database behavior, abap database connectionsfor implementation
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