Linux protocol error in / var / log / messeges

I have a server with CentOS 6 as Os and DB2 (10.5.0.5) database. I've seen our monitoring agents connect, but not close. then I checked / var / log / messeges and saw this error:

    November 18 09:29:10 MAINDB DB2[18186]: Error retrieving the rotation admin log
File Name: # 012Return Code: 0x800f007f # 012 PID: 18186 TID: 139881520719648
November 18 09:29:10 MAINDB DB2[18186]: Open DB2 Notification Log ""
failed. For this reason, run db2diag -rc 0x70F00CB # 012 PID: 18186
TID: 139881520719648 Sample: 20
November 18 09:29:10 MAINDB DB2[18200]: Opening the log file "" failed with rc
0x800F007F # 012Instance name: db2inst1 # 012Key number: 0 # 012Process ID:
18200 # 012 process name: db2bp # 012EDU ID: 0 # 012EDU name: # 012Thread ID:
140083607525152 # 012Database name: MAIN # 012 Sample number: 40 # 012Product
Name: DB2 UDB # 012Component Name: Oper System Services # 012Function name:
sqlowqueInternal # 012Called Product Name: OS # 012 Called Component Name: -
# 012Used function name: msgsnd  

when I execute this command db2diag -rc 70F00CB the issue is:

        Input ZRC string & # 39; 70F00CB & # 39; is parsed as 0x070F00CB (118423755).

ZRC value to allocate: 0x070F00CB (118423755)

ZRC-Class:
Global processing error (class index: 7)
Component:
SQLO; Operating System Services (Component Index: 15)
Basic Code:
203 (0x00CB)

identifier:
SQLO_FREV
Identifier (without component):
ERROR: no assignment found

Description:
The file already exists.

Related information:
SQL code -902
SQL0902C A system error has occurred. Subsequent SQL statements can not be
processed. IBM Software Support reason code: "".

Number of SQL tokens: 1
Diaglog message number: 1



Attempt to look up the value 0x070F00CB (118423755) as SQL code
For the value 118423755, no SQL code message was found

-------------------------------------------------- ---------
The supplied error code 0x070F00CB (118423755) is not recognized as:
1. a valid ECF error code
2. a valid ZRC value
3. a valid SQL code.
Attempt to invert the given error code byte by byte ...
-------------------------------------------------- ---------

BYTE REVERSAL Attempt, new input string: 0x00000000 (0)

ZRC value to allocate: 0x00000000 (0)

ZRC-Class:
SQL errors, user errors, ... (class index: 0)
Component:
Unknown component (component index: 0)
Undefined as of DB2 v10.5.0.5; s141128
Basic Code:
0 (0x0000)

Identifier (no component):
PSM_OK
SQLO_OK
SQLUDI_RC_OK
SQLZ_OK

Description:
unknown

Related information:
SQL code -902
SQL0902C A system error has occurred. Subsequent SQL statements can not be
processed. IBM Software Support reason code: "".

Number of SQL tokens: 1
Diaglog message number: 1