Solution : https://service.sap.com/sap/support/notes/380468 (SAP Service marketplace login required)
Key words : 
/general/r3server/patches/rel46d/unix/<unix>/inf/ nt, /general/r3server/patches/rel46d/nt/i386/inf/, directory /usr/sap/<sid>/sys/exe/run, sap product business information warehouse, correct informix client version installed, additional key words fragmentation, informix database shared libary, transaction 'rsrt' execute+debug, user <sid>adm, 6c kernel installed
Related Notes : 
       
| 368859 | Open SQL queries with PDQ occupy resources for too long | 
| 318846 | Installing the 4.6D kernel in 4.6A/B/C SAP systems | 
| 115619 | Informix Client versions |