Solution : https://service.sap.com/sap/support/notes/841447 (SAP Service marketplace login required)
Key words :
sap dbsl deadlock diagnostic files unusable, sap administration user '<sid>adm', display running sql statements, command 'chgrp sapifx $informixdir/, environment parameter 'unsecure_onstat', correct informix environment, 'informix admin' group, '<sid>adm', informix user, directory '$informixdir/
Related Notes :
| 863449 | Informix: DBSL with DB-Procedure DEADLOCK_DUMP call <6.x |
| 99161 | What is a deadlock? |