Database Software

Hi friends, in my environment i have a following problem:


environment:
Oracle RAC with 2 nodes:
Oracle: 10.2.0.3
SO: AIX 5.3

lately some problems with ASM and my instance shutdown with error:

/oracle/admin/+ASM/bdump/+asm2_alert.log
NOTE: ASMB process exiting due to lack of ASM file activity
Tue Sep 25 15:46:16 2007
Error: KGXGN aborts the instance (6)
Tue Sep 25 15:46:16 2007
Errors in file /oracle/admin/+ASM/bdump/+asm2_lmon_1278092.trc:
ORA-29702: error occurred in Cluster Group Service operation
LMON: terminating instance due to error 29702


/oracle/admin/+ASM/bdump/+asm2_lmon_1278092.trc
*** 2007-09-25 15:46:08.367
kjxggpoll: change poll time to 50 ms
2007-09-25 15:46:16.097: [ CSSCLNT]clsssRecvMsg: comm error received, comrc 11, con (110feeed0), msg (fffffffffffd020), msgl 1
44
2007-09-25 15:46:16.097: [ CSSCLNT]clssgsGGetStatus: communications failed (0/3/395551496)
2007-09-25 15:46:16.097: [ CSSCLNT]clssgsGGetStatus: returning 8
kgxgnpstat: received ABORT event from CLSS
kjxggpoll: received an abort event from DBALL_DB
Error: KGXGN aborts the instance (6)
error 29702 detected in background process
ORA-29702: error occurred in Cluster Group Service operation


thanks