DUAS 5: Crash / freeze of IO server and all the others process and engines are stopped

Issue/Introduction:

Affects Release version(s): 5

Error Message :
In the universe.log, in case of crash:
#####################
uxord /uxord /000000000 - After recv: IO server stopped, shutdown engine, before restart attempt
/uxcdjsrv /u_cdj_thread_ioserve/000000000 - IO server closed connection -> CDJ server stops
#####################

In the universe.log, in case of freeze:
#####################
<< 2013-04-23 07:15:19 0012459/uxioserv /u_traite_req_client /000000000 - Memory error: (requete) malloc failed (32774 bytes)

Or:

<< 2013-06-09 19:54:59 8389398/uxjobend /CALL_UXIOSRV /000000000 - u_io_callsrv(on pn1db00a,NORAUT,X) returns error -1
<< 2013-06-09 19:55:00 46792982/uxioserv /u_io_create_thread /000000000 - u_io_create_thread - System error 11 : thread launch type 0 failed (unable to create new thread), thread_number 1585
#####################

Patch level detected:Dollar Universe 5.6
Product Version: Dollar.Universe 5.6.0

Suddenly, in case of important activity , the IO server and all the others process and engines are stopped.
Sometimes, IO server may freeze and some errors related to threads not being able to be created appear in universe.log which keeps jobs from being Launched, remaining in status Launch Wait.

Cause:

Cause type:
Defect
Root Cause: Memory leak on IO server that could potentially cause a freeze / crash of the IO server.

Environment:

OS: All Unix

Resolution:

Update to a fix version listed below or a newer version if available.

Fix Status: Released

Fix Version(s):
Component: Application.Server
Version: Dollar.Universe 5.6.0 FX25010 - Available

Additional Information:

Workaround :
- Please check if all Dollar Universe process are stopped
- Launch an offline reorganization
- Restart Dollar Universe