Hi, I have db2 V9.5 FP 8 on Windows 2003 server 32 bits. I install a database and everything works fine, but when I use informix federation server detects it fine, but when I try to detect the nicknames the database goes down.
Anyone know what could it be?

grateful,

ORLANDO

What do you mean by "database goes down"? Which database? What's in db2diag.log?

the database is stopped.

db2diag.log

2012-01-10-09.29.55.299000-300 I90180H528 LEVEL: Event
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, trace services, pdInvokeCalloutScript, probe:10
START : Invoking C:\IBM\dwe\SQLLIB\bin\db2cos_trap.bat from oper system services sqloEDUExceptionFilter

2012-01-10-09.30.09.795000-300 I90710H557 LEVEL: Warning
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, trace services, pdInvokeCalloutScript, probe:110
MESSAGE : Detected end of execution of call-out script
DATA #1 : Process ID, 4 bytes
2340
DATA #2 : unsigned integer, 4 bytes
3

2012-01-10-09.30.09.795000-300 I91269H489 LEVEL: Event
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, trace services, pdInvokeCalloutScript, probe:20
STOP : Completed invoking C:\IBM\dwe\SQLLIB\bin\db2cos_trap.bat

2012-01-10-09.30.09.795000-300 I91760H572 LEVEL: Error
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh, probe:1
MESSAGE : Error in agent servicing application with coor_node:
DATA #1 : Hexdump, 2 bytes
0x073B5DF2 : 0000 ..

2012-01-10-09.30.09.795000-300 I92334H579 LEVEL: Error
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh, probe:2
MESSAGE : Error in agent servicing application with coor_agent_index:
DATA #1 : Hexdump, 2 bytes
0x073B5DF0 : 2D00 -.

2012-01-10-09.30.09.795000-300 I92915H574 LEVEL: Error
PID : 2512 TID : 244 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : OASIS_DB
APPHDL : 0-45 APPID: *LOCAL.DB2.120110142950
AUTHID : ADMINISTRADOR
EDUID : 244 EDUNAME: db2agent (OASIS_DB) 0
FUNCTION: DB2 UDB, base sys utilities, sqleagnt_sigsegvh, probe:3
MESSAGE : Error in agent servicing application with CLIENT PID:
DATA #1 : Hexdump, 3 bytes
0x073B5DD0 : 3934 34 944

and continue..

A database is just a bunch of files; how can it "be stopped"? You obviously mean something else, so you'd be better off using standard DB2 terminology. How do you discover that "the database is stopped"? Any error messages?

Also, you have omitted the most important parts of db2diag.log that go before and after the fragment that you have posted.

Ok, sorry, the instance stop, i need to run db2start again. this happens every time I try to create a nickname.

Looks like a DB2 bug; you should contact DB2 support.