Frequently receiving EACCES errors in db2diag.log file.

Issue

• We are frequently receiving below errors in db2diag.log files

2014-11-09-20.05.24.067320+480 E20961520E951       LEVEL: Error (OS)
PID     : 20852                TID  : 46912565244336PROC : db2fmpr  
INSTANCE: instancexx              NODE : 000                           
FUNCTION: DB2 UDB, oper system services, sqloopenp, probe:80        
MESSAGE : ZRC=0x840F0001=-2079391743=SQLO_ACCD "Access Denied"      
          DIA8701C Access denied for resource "", operating system  
return code                                                         
          was "".                                                   
CALLED  : OS, -, open                             OSERR: EACCES (13)
DATA #1 : Codepath, 8 bytes                                         
4:11:12:22:37                                                       
DATA #2 : File name, 29 bytes                                       
/home/instancexx/sqllib/db2systm                                       
DATA #3 : SQO Open File Options, PD_TYPE_SQO_FILE_OPEN_OPTIONS, 4 byte
SQLO_REVISE, SQLO_READWRITE, SQLO_EXCLUSIVE, SQLO_WRITETHRU         
DATA #4 : Hex integer, 4 bytes                                      
0x000001A0