log rotate error in /var/log/messeges

i have a server with CentOS 6 as Os and DB2(10.5.0.5) database. i saw that our monitoring agents get connection but they dont close it. then i checked /var/log/messeges and saw this error:

 Nov 18 09:29:10 MAINDB DB2[18186]: Failed to get the rotate admin log   file name: #012Return Code: 0x800f007f#012 PID:18186 TID:139881520719648  Nov 18 09:29:10 MAINDB DB2[18186]: Open of DB2 admin notify log ""   failed. For reason, run db2diag -rc 0x70F00CB#012 PID:18186   TID:139881520719648Probe: 20  Nov 18 09:29:10 MAINDB DB2[18200]: Open of log file "" failed with rc   0x800F007F#012Instance name: db2inst1#012Node number: 0#012Process ID:   18200#012Process name: db2bp#012EDU ID: 0#012EDU name: #012Thread ID:   140083607525152#012Database name: MAIN#012Probe number: 40#012Product   Name: DB2 UDB#012Component Name: oper system services#012Function Name:   sqlowqueInternal#012Called Product Name: OS#012Called Component Name: -   #012Called Function Name: msgsnd   

when i run this command db2diag -rc 70F00CB the output is:

  Input ZRC string '70F00CB' parsed as 0x070F00CB (118423755).    ZRC value to map: 0x070F00CB (118423755)    ZRC class :           Global Processing Error (Class Index: 7)   Component:           SQLO ; oper system services (Component Index: 15)   Reason Code:          203 (0x00CB)    Identifer:          SQLO_FREV   Identifer (without component):          ERROR: no mapping found    Description:          File already exists.    Associated information:          Sqlcode -902   SQL0902C  A system error occurred. Subsequent SQL statements cannot be   processed. IBM software support reason code: "".      Number of sqlca tokens : 1     Diaglog message number: 1      Attempting to lookup value 0x070F00CB (118423755) as a sqlcode     No sqlcode message found for value 118423755    -----------------------------------------------------------     The error code provided, 0x070F00CB (118423755), is not recognized as :     1. a valid ECF error code     2. a valid ZRC value     3. a valid sqlcode.     Attempting to byte reverse the given error code ...  -----------------------------------------------------------   BYTE REVERSAL Attempt, new input string : 0x00000000 (0)   ZRC value to map: 0x00000000 (0)   ZRC class :     SQL Error, User Error,... (Class Index: 0)  Component:     Unknown component (Component Index: 0)     Undefined as of DB2 v10.5.0.5; s141128  Reason Code:     0 (0x0000)   Identifer (no component):     PSM_OK     SQLO_OK     SQLUDI_RC_OK     SQLZ_OK  Description:     Unknown  Associated information:     Sqlcode -902 SQL0902C  A system error occurred. Subsequent SQL statements cannot be processed. IBM software support reason code: "".      Number of sqlca tokens : 1     Diaglog message number: 1