ASMB的BUG(ORA-04030 kfmditer)导致数据库宕机
ASMB的BUG(ORA-04030 kfmditer)导致数据库宕机
现象:
客户的一个重要生产系统RAC的一个实例宕机,查看alert日志:
Fri Jun 21 17:05:52 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_asmb_11391.trc (incident=31397):
ORA-04030: out of process memory when trying to allocate 592 bytes (callheap,kfmditer)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31397/jyj1_asmb_11391_i31397.trc
Fri Jun 21 17:05:55 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_rbal_11389.trc (incident=31389):
ORA-04030: out of process memory when trying to allocate bytes (,)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31389/jyj1_rbal_11389_i31389.trc
Fri Jun 21 17:06:14 2013
Instance terminated by ASMB, pid = 11391
查看asmb trace文件:
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_asmb_11391.trc (incident=31397):
ORA-04030: out of process memory when trying to allocate 592 bytes (callheap,kfmditer)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31397/jyj1_asmb_11391_i31397.trc
Fri Jun 21 17:05:52 2013
Trace dumping is performing id=[cdmp_20130621170552]
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_asmb_11391.trc:
ORA-04030: out of process memory when trying to allocate 592 bytes (callheap,kfmditer)
ASMB (ospid: 11391): terminating the instance due to error 4030
System state dump is made for local instance
System State dumped to trace file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_diag_11345.trc
Fri Jun 21 17:05:53 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_lms0_11363.trc (incident=31301):
ORA-04030: out of process memory when trying to allocate bytes (,)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31301/jyj1_lms0_11363_i31301.trc
Fri Jun 21 17:05:53 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_lmon_11359.trc (incident=31277):
ORA-04030: out of process memory when trying to allocate bytes (,)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31277/jyj1_lmon_11359_i31277.trc
Fri Jun 21 17:05:53 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_lms1_11367.trc (incident=31309):
ORA-04030: out of process memory when trying to allocate bytes (,)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31309/jyj1_lms1_11367_i31309.trc
Fri Jun 21 17:05:54 2013
ORA-1092 : opitsk aborting process
Fri Jun 21 17:05:54 2013
License high water mark = 327
Fri Jun 21 17:05:55 2013
Errors in file /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_rbal_11389.trc (incident=31389):
ORA-04030: out of process memory when trying to allocate bytes (,)
Incident details in: /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31389/jyj1_rbal_11389_i31389.trc
Fri Jun 21 17:06:14 2013
Instance terminated by ASMB, pid
jyj1_asmb_11391_i31397.trc:
Dump file /opt/app/diag/rdbms/jyj/jyj1/incident/incdir_31397/jyj1_asmb_11391_i31397.trc
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
ORACLE_HOME = /opt/app/ora11gR1db
System name: Linux
Node name: KSJYJ_DB01
Release: 2.6.18-164.el5
Version: #1 SMP Thu Sep 3 04:15:13 EDT 2009
Machine: x86_64
Instance name: jyj1
Redo thread mounted by this instance: 1
Oracle process number: 24
Unix process pid: 11391, image: oracle@KSJYJ_DB01 (ASMB)
*** 2013-06-21 17:05:52.045
*** SESSION ID:(532.1) 2013-06-21 17:05:52.046
*** CLIENT ID:() 2013-06-21 17:05:52.046
*** SERVICE NAME:(SYS$BACKGROUND) 2013-06-21 17:05:52.046
*** MODULE NAME:() 2013-06-21 17:05:52.046
*** ACTION NAME:() 2013-06-21 17:05:52.046
Dump continued from file: /opt/app/diag/rdbms/jyj/jyj1/trace/jyj1_asmb_11391.trc
ORA-04030: out of process memory when trying to allocate 592 bytes (callheap,kfmditer)
========= Dump for incident 31397 (ORA 4030) ========
*** 2013-06-21 17:05:52.046
----- SQL Statement (None) -----
Current SQL information unavailable - no cursor.
skdstdst <- ksedst1 <- ksedst <- dbkedDefDump <- ksedmp
<- ksfdmp <- dbgexPhaseII <- dbgexProcessError <- dbgeExecuteForError <- dbgePostErrorKGE
<- 1774 <- dbkePostKGE_kgsf <- kgesev <- kgesec3 <- kghnospc
<- kghalf <- kfmdIterInit <- kfkIterInit <- kfnbIostatiterOp <- 110
<- kfnbRun <- ksbrdp <- opirip <- opidrv <- sou2o
Process state
-----------------------
SO: 0x940dd1b98, type: 2, owner: (nil), flag: INIT/-/-/0x00 if: 0x3 c: 0x3
proc=0x940dd1b98, name=process, file=ksu.h LINE:10286, pg=0
(process) Oracle pid:24, ser:1, calls cur/top: 0x920f28eb8/0x920f28eb8
flags: (0x6) SYSTEM
int error: 0, call error: 0, sess error: 0, txn error 0
(post info) last post received: 0 0 34
last post received-location: ksr2.h LINE:594 ID:ksrpublish
last process to post me: 950dfd540 47 2
last post sent: 0 0 64
last post sent-location: kso2.h LINE:316 ID:ksoreq_reply
last process posted by me: 930e5c948 1 0
(latch info) wait_event=0 bits=0
Process Group: DEFAULT, pseudo proc: 0x950e4c060
O/S info: user: oracle, term: UNKNOWN, ospid: 11391
OSD pid info: Unix process pid: 11391, image: oracle@KSJYJ_DB01 (ASMB)
Dump of memory from 0x00000009D0DC0A10 to 0x00000009D0DC0C18
分析:
从报错信息(ORA-04030)看来,怀疑是Oracle的BUG导致的,因为以前碰到过类似的ASMB进程内存泄露的BUG,
于是搜索metalink关键词:asmb 04030
发现第一篇就跟客户的问题吻合。
ASMB process grows raising ora-4030 intermittently (Doc ID 735180.1)
ASMB process grows on memory, eventually leading to ora-4030 errors
which causes DB crash.
The reported error:
ORA-04030: out of process memory when trying to allocate 552 Bytes (callheap,kfmditer)
In the ASMB process heapdump we can see most of memory chunks are for 'kfmditer',
example:
BreakDown
~~~~~~~~~
Type Count Sum Average
~~~~ ~~~~~ ~~~ ~~~~~~~
Free 285684 142841492 500.00
kfmditer 285685 157698132 552.00 <-- 在ASMB的HEAPDUMP中也看到了绝大多数都为kfmditer的内存片
Total = 300539624 bytes 293495.73k 286.62MB
这个BUG在11.1以后的大版本中都有出现,但是在以下的patchset中被修复:
This issue is fixed in
11.2.0.1 (Base Release)
11.1.0.7.1 (Patch Set Update)
10.2.0.5 (Server Patch Set)
11.1.0.7 Patch 11 on Windows Platforms
11.1.0.7 RAC Recommended Patch Bundle #1
11.1.0.6 Patch 11 on Windows Platforms
如果不想做patchset升级的话,也可以直接打个小Patch 6851110可以解决这个问题。
You can check if Patch 6851110 is available for your patchset release and
O/S environment.: Patch 6851110
解决方法:
在客户的数据库上打patch 6851110,经过持续观察一段时间,该问题未再现。
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