ORA-07445错误

今天发现数据库里的cdump目录下产生了一对的CORE文件。

查看alert日志发现都是

……
Wed Oct 12 09:58:51 2011
Restarting dead background process CJQ0
Wed Oct 12 09:58:52 2011
CJQ0 started with pid=43, OS id=5247 
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x130000001E] [PC:0x6E678E4, kslgetl()+40]
Errors in file /home/oracle/diag/rdbms/orarpt/orarpt/trace/orarpt_cjq0_5247.trc  (incident=276255):
ORA-07445: exception encountered: core dump [kslgetl()+40] [SIGSEGV] [ADDR:0x130000001E] [PC:0x6E678E4] [Address not mapped to object] []
Wed Oct 12 09:58:59 2011
Sweep Incident[276255]: completed

接着查看相应的trace文件

oracle@linux-35:~/diag/rdbms/orarpt/orarpt/trace> more /home/oracle/diag/rdbms/orarpt/orarpt/trace/orarpt_cjq0_5247.trc
Trace file /home/oracle/diag/rdbms/orarpt/orarpt/trace/orarpt_cjq0_5247.trc
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning option
ORACLE_HOME = /home/oracle/product/11.1.0/db_1
System name:    Linux
Node name:      linux-35
Release:        2.6.16.21-0.8-smp
Version:        #1 SMP Mon Jul 3 18:25:39 UTC 2006
Machine:        x86_64
Instance name: orarpt
Redo thread mounted by this instance: 1
Oracle process number: 43
Unix process pid: 5247, image: oracle@linux-35 (CJQ0)

*** 2011-10-12 09:58:55.533
*** SESSION ID:(1197.56623) 2011-10-12 09:58:55.533
*** CLIENT ID:() 2011-10-12 09:58:55.533
*** SERVICE NAME:(SYS$BACKGROUND) 2011-10-12 09:58:55.533
*** MODULE NAME:() 2011-10-12 09:58:55.533
*** ACTION NAME:() 2011-10-12 09:58:55.533
 
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x130000001E] [PC:0x6E678E4, Exception [type: SIGSEGV, Address not map
ped to object] [ADDR:0x130000001E] [PC:0x6E678E4, kslgetl()+40]
DDE: Problem Key 'ORA 7445 [kslgetl()+40]' was flood controlled (0x6) (incident: 276255)
ORA-07445: exception encountered: core dump [kslgetl()+40] [SIGSEGV] [ADDR:0x130000001E] [PC:0x6E678E4] [Address not mapped to objec
t] []
ssexhd: crashing the process...
Background_Core_Dump = PARTIAL

感觉应该是job进程有问题，同事也反映，从11号开始job都不能正常运行。

上网查了资料，也没找到相关原因，大部分都说是oracle BUG。无奈只得重启下数据库试试，重启后发现job进程正常了，所有job都能正常执行。

具体原因不明，先在此做个记录，后续有相关答案再写。