我的数据库，通过升级实例用户，升级数据库的方法，将db2由9.1升级到9.7。升级完毕后，数据库能正常启动和运行，但是日志中总是报一些错误。请各位大侠指点下小弟，错误如下：
2012-09-26-23.16.49.655155+480 E895935A328 LEVEL: Error (OS)
PID : 328174 TID : 1 PROC : db2star2
INSTANCE: instiaci NODE : 000
EDUID : 1
FUNCTION: DB2 UDB, SQO Memory Management, sqloMemCreateSingleSegment, probe:100
CALLED : OS, -, shmget
OSERR : EEXIST (17) "File exists"
2012-09-27-10.15.49.260481+480 E899249A712 LEVEL: Error (OS)
PID : 733616 TID : 1 PROC : db2bp
INSTANCE: instiaci NODE : 000
APPID : *LOCAL.instiaci.120927021405
EDUID : 1
FUNCTION: DB2 UDB, oper system services, sqlowqueInternal, probe:40
MESSAGE : ZRC=0x870F003E=-2029060034=SQLO_QUE_BAD_HANDLE "Bad Queue Handle"
DIA8555C An invalid message queue handle was encountered.
CALLED : OS, -, msgsnd
OSERR : EINVAL (22) "A system call received a parameter that is not valid."
DATA #1 : system V message queue identifier., PD_TYPE_SYSV_QUEUE_ID, 4 bytes
0x007000FF
DATA #2 : Pointer, 8 bytes
0x0000000110050790
DATA #3 : unsigned integer, 8 bytes
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