Oradebug 学习
2015-12-16 10:32
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说明
oradebug主要是给oracle支持人员使用的，尽管很早便有，但oracle官网很少有记载。他是个sql*plus命令行工具，有sysdba的权限就可以登入，无需特别设置。他可以被用于：
1）追踪进程，或者是你的，或者是外部的
2）确定进程往哪个trc文件写
3）转储：数据文件头、内部oracle结构等
4）挂起进程，暂时的
5）确定实例使用了哪些共享内存块和信号量
6）找出RAC实例使用了哪些互联地址和协议
7）修改SGA中的数据结构
SQL> oradebughelp
HELP [command] Describe one or all commands
SETMYPID Debug currentprocess
SETOSPID <ospid> Set OS pid of process todebug
SETORAPID <orapid> ['force'] Set Oracle pid of process to debug
SETORAPNAME <orapname> Set Oracle process name todebug
SHORT_STACK Get abridged OSstack
CURRENT_SQL Get current SQL
DUMP <dump_name> <lvl>[addr] Invoke named dump
PDUMP [interval=<interval>] Invoke named dump periodically
[ndumps=<count>] <dump_name> <lvl> [addr]
DUMPSGA [bytes] Dump fixed SGA
DUMPLIST Print a listof available dumps
EVENT <text> Set trace event in process
SESSION_EVENT <text> Set trace event in session
DUMPVAR <p|s|uga> <name>[level] Print/dump a fixed PGA/SGA/UGAvariable
DUMPTYPE <address> <type><count> Print/dump an address withtype info
SETVAR <p|s|uga> <name><value> Modify a fixed PGA/SGA/UGAvariable
PEEK <addr> <len>[level] Print/Dump memory
POKE <addr> <len><value> Modify memory
WAKEUP <orapid> Wake up Oracle process
SUSPEND Suspendexecution
RESUME Resumeexecution
FLUSH Flushpending writes to trace file
CLOSE_TRACE Close trace file
TRACEFILE_NAME Get name of tracefile
SETTRACEFILEID<identifier name> Settracefile identifier
LKDEBUG Invoke globalenqueue service debugger
NSDBX Invoke CGSname-service debugger
-G <Inst-List | def | all> Parallel oradebug command prefix
-R <Inst-List | def | all> Parallel oradebug prefix (return output
SETINST <instance# .. | all> Set instance list in double quotes
SGATOFILE <SGA dump dir> Dump SGA to file; dirname in doublequotes
DMPCOWSGA <SGA dump dir> Dump & map SGAas COW; dirname in double quotes
MAPCOWSGA <SGA dump dir> Map SGA as COW; dirname in doublequotes
HANGANALYZE [level] [syslevel] Analyze system hang
FFBEGIN Flash Freezethe Instance
FFDEREGISTER FF deregisterinstance from cluster
FFTERMINST Call exit andterminate instance
FFRESUMEINST Resume the flashfrozen instance
FFSTATUS Flash freezestatus of instance
SKDSTTPCS <ifname> <ofname> Helps translate PCs to names
WATCH <address> <len><self|exist|all|target> Watch aregion of memory
DELETE <local|global|target> watchpoint<id> Delete a watchpoint
SHOW <local|global|target>watchpoints Show watchpoints
DIRECT_ACCESS <set/enable/disable command | selectquery> Fixed table access
IPC Dump ipcinformation
UNLIMIT Unlimit thesize of the trace file
CALL [-t count] <func>[arg1]...[argn] Invoke function witharguments
CORE Dump corewithout crashing process
PROCSTAT Dump processstatistics
使用方法举例
【获得
当前实例的trace文件】
SQL> oradebugsetmypid
Statement processed.
SQL>oradebug tracefile_name ---获得文件名称
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6877.trc
【获得非当前进程的trace】
selectpid,spid,username from v$process;
v$process
下的pid
是Oracle
的ID。spid
是系统的ID。
selecta.username,a.sid ,a.serial#,b.spid fromv$session a,v$process b where a.paddr=b.addr;
v$session下的sid是指session
id，b.spid是指系统ID。
oradebug setospid --跟踪系统进程
oradebug setorapid --跟踪ORACLE进程
SQL> oradebugsetospid 6150
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> oradebugsetorapid 44
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
可以看到
文件名称都是一样的
【用oradebug做session级10046或10053】
oradebugsetmypid ---跟踪当前的进程
oradebug unlimit ---取消对trace文件大小的限制
oradebug session_event 10046 trace name context forever ,level4 --开启10046事件跟踪
oradebug tracefile_name ---查看trace的路径
oradebug event 10046 trace name context off --关闭10046事件跟踪
oradebug session_event 10053 trace name context forever ,level4 ---开启10053事件跟踪
oradebug event 10053 trace name context off --关闭10053事件跟踪
SQL> oradebugsetmypid
Statement processed.
SQL> oradebug unlimit
Statement processed.
SQL> oradebugsession_event 10046 trace name context forever ,level 4
Statement processed.
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc
-rw-r----- 1 oracle asmadmin 1629 12月 1516:56 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc
SQL> oradebugevent 10046 trace name context off
Statement processed.
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc
-rw-r----- 1 oracle asmadmin 1829 12月 1516:57 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_11602.trc
【用oradebug做oracle
process级10046】
跟踪oracle ID 14，系统进程6150的10046是事件情况
SQL> select a.username,a.sid,a.serial#,b.spid from v$sessiona,v$process b where a.paddr=b.addr;
SOE 11 3 6150
SQL> select pid,spid,username from v$process;
44 6150 oracle
oradebug setorapid44
oradebug unlimit
oradebug event 10046trace name context forever ,level 4
oradebug event 10046trace name context off
oradebugtracefile_name
SQL> oradebugsetorapid 44
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugevent 10046 trace name context forever ,level 4
Statement processed.
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> oradebugevent 10046 trace name context off
Statement processed.
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
-rw-r----- 1 oracle asmadmin 707546 12月 1517:19 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
【radebug系统hang住原因分析】
oradebug setmypid
oradebug unlimit
oradebugsetinst all --RAC环境
oradebug hanganalyze 3 --
级别一般指定为3足够了
oradebug-g def dump systemstate 10 --RAC环境
oradebugtracefile_name
SQL> oradebugsetmypid
Statement processed.
SQL> oradebugunlimit
Statement processed.
SQL> oradebughanganalyze 3
Hang Analysis in/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
-rw-r----- 1 oracle asmadmin 5547 12月 1517:20 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
-rw-r----- 1 oracle asmadmin 5547 12月 1517:20 /u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12457.trc
SQL> exit
【获取某进程的状态信息】
必须是Oracle
的进程
oradebug setospid6150
oradebug dumpprocessstate 10
oradebugtracefile_name
SQL> oradebugsetospid 6150
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugdump processstate 10
Statement processed.
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
-rw-r----- 1 oracle asmadmin 1629700 12月 15 17:22/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
-rw-r----- 1 oracle asmadmin 1629700 12月 15 17:22/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> exit
【获得系统状态】
oradebug setospid6150
oradebug unlimit
oradebug dump systemstate 10 -使用level10
可以获得较全的信息
oradebugTRACEFILE_NAME
oradebug close_trace
【获取进程错误信息状态】
oradebug setospid6150
oradebug dumperrorstack 3
SQL> oradebugsetospid 6150
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugdump errorstack 3
Statement processed.
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
-rw-r----- 1 oracle asmadmin 5403981 12月 15 17:23/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> !ls -lrt/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
-rw-r----- 1 oracle asmadmin 5403981 12月 15 17:23/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
SQL> exit
【追踪造成错误信息的原因，如ORA-04031】
oradebug event 4031trace name errorstack level 3
SQL> oradebugsetospid 6150
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugevent 4031 trace name errorstack level 3
Statement processed.
SQL> oradebugtracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_6150.trc
oradebug flush
将当前trace buffer中的条目
刷新到trace文件中
【dump
相关文件信息】
SQL> oradebugdumplist
TRACE_BUFFER_ON
TRACE_BUFFER_OFF
LATCHES
PROCESSSTATE
SYSTEMSTATE
INSTANTIATIONSTATE
REFRESH_OS_STATS
SQLNET_SERVER_TRACE
CROSSIC
CONTEXTAREA
HANGDIAG_HEADER
HEAPDUMP
HEAPDUMP_ADDR
POKE_ADDRESS
POKE_LENGTH
POKE_VALUE
POKE_VALUE0
GLOBAL_AREA
REALFREEDUMP
FLUSH_JAVA_POOL
POOL_SIMULATOR
PGA_DETAIL_GET
PGA_DETAIL_DUMP
PGA_DETAIL_CANCEL
PGA_SUMMARY
MODIFIED_PARAMETERS
EVENT_TSM_TEST
ERRORSTACK
CALLSTACK
TEST_STACK_DUMP
TEST_GET_CALLER
RECORD_CALLSTACK
EXCEPTION_DUMP
BG_MESSAGES
ENQUEUES
KSTDUMPCURPROC
KSTDUMPALLPROCS
KSTDUMPALLPROCS_CLUSTER
SIMULATE_EOV
KSFQP_LIMIT
KSKDUMPTRACE
DBSCHEDULER
LDAP_USER_DUMP
LDAP_KERNEL_DUMP
DUMP_ALL_OBJSTATS
DUMPGLOBALDATA
HANGANALYZE
HANGANALYZE_PROC
HNGDET_MEM_USAGE_DUMP
DEAD_CLEANUP_STATE
HANGANALYZE_GLOBAL
GES_STATE
CGS
OCR
CSS
CRS
SYSTEMSTATE_GLOBAL
GIPC
MMAN_ALLOC_MEMORY
MMAN_CREATE_DEF_REQUEST
MMAN_CREATE_IMM_REQUEST
MMAN_IMM_REQUEST
DUMP_ALL_COMP_GRANULE_ADDRS
DUMP_ALL_COMP_GRANULES
DUMP_ALL_REQS
DUMP_TRANSFER_OPS
DUMP_ADV_SNAPSHOTS
ADJUST_SCN
NEXT_SCN_WRAP
CONTROLF
FLUSH_CACHE
FULL_DUMPS
BUFFERS
RECOVERY
SET_TSN_P1
GLOBAL_BUFFER_DUMP
BUFFER
PIN_BLOCKS
BC_SANITY_CHECK
PIN_RANDOM_BLOCKS
SET_NBLOCKS
CHECK_ROREUSE_SANITY
DUMP_PINNED_BUFFER_HISTORY
KCBO_OBJ_CHECK_DUMP
KCB_WORKING_SET_DUMP
KCBS_ADV_INT_DUMP
KCBI_DUMP_FREELIST
SCN_AUTO_ROLLOVER_TS_OVERRIDE
REDOLOGS
ARCHIVE_ERROR
LOGHIST
REDOHDR
LOGERROR
OPEN_FILES
DATA_ERR_ON
DATA_READ_ERR_ON
DATA_ERR_OFF
BLK0_FMTCHG
UPDATE_BLOCK0_FORMAT
TR_SET_BLOCK
TR_SET_ALL_BLOCKS
TR_SET_SIDE
TR_CRASH_AFTER_WRITE
TR_READ_ONE_SIDE
TR_CORRUPT_ONE_SIDE
TR_RESET_NORMAL
TEST_DB_ROBUSTNESS
LOCKS
GC_ELEMENTS
FILE_HDRS
KRB_CORRUPT_INTERVAL
KRB_CORRUPT_SIZE
KRB_CORRUPT_REPEAT
KRB_CORRUPT_OFFSET
KRB_PIECE_FAIL
KRB_OPTIONS
KRB_FAIL_INPUT_FILENO
KRB_SIMULATE_NODE_AFFINITY
KRB_TRACE
KRB_BSET_DAYS
KRB_SET_TIME_SWITCH
KRB_OVERWRITE_ACTION
KRB_CORRUPT_SPHEADER_INTERVAL
KRB_CORRUPT_SPHEADER_REPEAT
KRB_CORRUPT_SPBITMAP_INTERVAL
KRB_CORRUPT_SPBITMAP_REPEAT
KRB_CORRUPT_SPBAD_INTERVAL
KRB_CORRUPT_SPBAD_REPEAT
KRB_UNUSED_OPTION
KRBMRSR_LIMIT
KRBMROR_LIMIT
KRBABR_TRACE
KRDRSBF
KRC_TRACE
KRA_OPTIONS
KRA_TRACE
FBTAIL
FBINC
FBHDR
FLASHBACK_GEN
KTPR_DEBUG
DUMP_TEMP
DROP_SEGMENTS
TEST_SPACEBG
TREEDUMP
LONGF_CREATE
KDLIDMP
ROW_CACHE
LIBRARY_CACHE
LIBRARY_CACHE_OBJECT
CURSORDUMP
CURSORTRACE
CURSOR_STATS
XS_SESSION_STATE
SHARED_SERVER_STATE
LISTENER_REGISTRATION
JAVAINFO
KXFPCLEARSTATS
KXFPDUMPTRACE
KXFPBLATCHTEST
KXFXSLAVESTATE
KXFXCURSORSTATE
KXFRHASHMAP
WORKAREATAB_DUMP
KUPPLATCHTEST
OBJECT_CACHE
SAVEPOINTS
RULESETDUMP
RULESETDUMP_ADDR
FAILOVER
OLAP_DUMP
SELFTESTASM
ASMDISK_ERR_ON
ASMDISK_READ_ERR_ON
ASMDISK_ERR_OFF
ASM_EVENREAD
IOERREMUL
IOERREMULRNG
ALRT_TEST
AWR_TEST
AWR_FLUSH_TABLE_ON
AWR_FLUSH_TABLE_OFF
ASHDUMP
ASHDUMPSECONDS
MMON_TEST
ATSK_TEST
HM_FW_TRACE
HM_FDG_VERS
IR_FW_TRACE
KSDTRADV_TEST
具体使用方法
SQL>oradebug setmypid
Statementprocessed.
SQL>oradebug dump LOCKS 10
Statementprocessed.
SQL>oradebug tracefile_name
/u01/app/oracle/diag/rdbms/tune/tune/trace/tune_ora_12730.trc
具体
参考http://psoug.org/reference/oradebug.html
【Trace SQL】
使用DBMS_SYSTEM包：
select a.username,a.sid ,a.serial#,b.spid fromv$session a,v$process b wherea.paddr=b.addr;
SOE 11 3 oradebug setospid
execute dbms_system.set_sql_trace_in_session(11,3,true);
开启对进程6150的跟踪
execute dbms_system.set_sql_trace_in_session(11,3,false);
关闭
SQL> l
1* select a.username,a.sid ,a.serial#,b.spidfrom v$session a,v$process b wherea.paddr=b.addr
SQL> executedbms_system.set_sql_trace_in_session(11,3,true);
PL/SQL proceduresuccessfully completed.
SQL> executedbms_system.set_sql_trace_in_session(11,3,false);
PL/SQL proceduresuccessfully completed.
使用oradebug
oradebug setospid6150
oradebug event 10046trace name context forever,level 4
oradebug event 10046trace name context off
SQL> oradebugsetospid 6150
Oracle pid: 44, Unixprocess pid: 6150, image: oracle@dgdemo1
SQL> oradebugevent 10046 trace name context forever,level 4
Statement processed.
SQL> oradebugevent 10046 trace name context off
Statement processed.
参考
http://blog.csdn.net/tianlesoftware/article/details/6525628
http://blog.sina.com.cn/s/blog_61cd89f60102ee3j.html
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