Error in alertlog

Question

Dear All,
Today morning suddenly one of our database instance gone down. So after restart the database when I looked for the alert log file I found the following informations -
Memory Notification: Library Cache Object loaded into SGA
Heap size 2651K exceeds notification threshold (2048K)
Details in trace file /home/oracle/u01/app/oracle/product/10.2.0/Db_1/admin/uat/udump/uat_ora_29577.trc
KGL object name :Select /*+ CHOOSE */ t.*, o.OBJECT_TYPE
from SYS.ALL_tab_privs t, SYS.ALL_objects o
where t.TABLE_SCHEMA = o.OWNER
and t.TABLE_NAME = o.OBJECT_NAME
and o.object_type in ('TABLE','INDEXTYPE','TYPE')
and t.TABLE_SCHEMA = 'LS1'
and TABLE_NAME = 'L_FL_STG'
ORDER BY 4,3,1
Fri Oct 24 11:13:12 2008
Thread 1 advanced to log sequence 3181
Current log# 3 seq# 3181 mem# 0: /db_1/uat/uat/redo03.log
Fri Oct 24 11:27:54 2008
Thread 1 advanced to log sequence 3182
Current log# 1 seq# 3182 mem# 0: /db_1/uat/uat/redo01.log
Fri Oct 24 11:42:34 2008
Thread 1 advanced to log sequence 3183
Current log# 2 seq# 3183 mem# 0: /db_1/uat/uat/redo02.log
Fri Oct 24 11:52:19 2008
Errors in file /home/oracle/u01/app/oracle/product/10.2.0/Db_1/admin/uat/udump/uat_ora_27604.trc:
ORA-07445: exception encountered: core dump [kglrfcl()+612] [SIGSEGV] [Address not mapped to object] [0x800000002] [] []
Fri Oct 24 11:52:32 2008
Errors in file /home/oracle/u01/app/oracle/product/10.2.0/Db_1/admin/uat/bdump/uat_pmon_1546.trc:
ORA-07445: exception encountered: core dump [kggchk()+52] [SIGSEGV] [Address not mapped to object] [0x800000002] [] []
Fri Oct 24 11:52:44 2008
CKPT: terminating instance due to error 472
Instance terminated by CKPT, pid = 1562
Fri Oct 24 11:56:12 2008
Starting ORACLE instance (normal)
So can any one of you let me know why it has happend and what to do ?
Edited by: user606947 on Oct 24, 2008 1:28 AM

Answer 1

Hi Nicolas,
I stated my assumption and I asked him the version if you check the reply, I though that might be the problem, but I am not forcing him to do the things.
Did I ?? I said that undocumented parameter is available but his information sake and did not asked him to use it and given him a suggestion of Upgrade that might solve his issue from my perspective End and I accept what ever you said with out knowing the platform I should not comment out. Coming to the joining of ORACLE Support, as I am not not lucky enough to Join ORACLE Support and not capable enough to hold that Job. There are lot of people who are more capable enough and possessing knowledge compare to me. I am not worth of it Sir.
I sincerely Apologize is any thing by mistake or you got hurted by my words.. I take back. Please Accept my apology and I will try to stop Answering such of Questions with out knowing the things (Asumptions too)
Have a Great Day.. Ahead...
- Pavan Kumar N