ORACLE oradebug
ORACLE oradebug使用
参考文献：
http://www.juliandyke.com/Diagnostics/Tools/ORADEBUG/ORADEBUG.html
oradebug这个工具oracle很少有文档来说明该工具的功能。该工具主要的功能是给技术支持人员使用的。
下面主要来看看这个工具的使用和主要功能。
1. HELP command
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SQL> conn / as sysdba SQL> oradebug help HELP [command] Describe one or all commands SETMYPID Debug current process SETOSPID SETORAPID SETORAPNAME SHORT_STACK Get abridged OS stack CURRENT_SQL Get current SQL DUMP DUMPSGA [bytes] Dump fixed SGA DUMPLIST Print a list of available dumps EVENT SESSION_EVENT DUMPVAR DUMPTYPE SETVAR PEEK POKE WAKEUP SUSPEND Suspend execution RESUME Resume execution FLUSH Flush pending writes to trace file CLOSE_TRACE Close trace file TRACEFILE_NAME Get name of trace file LKDEBUG Invoke global enqueue service debugger NSDBX Invoke CGS name-service debugger -G -R SETINST SGATOFILE DMPCOWSGA MAPCOWSGA HANGANALYZE [level] [syslevel] Analyze system hang FFBEGIN Flash Freeze the Instance FFDEREGISTER FF deregister instance from cluster FFTERMINST Call exit and terminate instance FFRESUMEINST Resume the flash frozen instance FFSTATUS Flash freeze status of instance SKDSTTPCS WATCH DELETE SHOW DIRECT_ACCESS CORE Dump core without crashing process IPC Dump ipc information UNLIMIT Unlimit the size of the trace file PROCSTAT Dump process statistics CALL [-t count] |
1.1 SETMYPID command
在使用oradebug之前，必须指定一个process。使用该语法可以选择自己的process或者也可以指定其他的process.当使用setmypid之后，你可以使用所有的command，比如dumps
下面的语句就是选择自己的process
For example
ORADEBUG SETMYPID
当你准备使用oradebug suspend的时候，请不要使用oradebug setmypid
1.2 SETORAPID or SETOSPID command
和1.1里面的东西对应，这两个都是进程追踪指令，setorapid是追踪oracle的进程，setospid追踪的是操作系统的进程。他们分别对应v$process视图中的pid和spid
SQL> select pid,spid,username from v$process;
PID SPID USERNAME
---------- ------------------------ ---------------
1
2 2771 oracle
3 2773 oracle
4 2775 oracle
5 2779 oracle
如下的查询定位SMON进程的pid,spid
SELECT pid,spid FROM v$process
WHERE addr =
(
SELECT paddr FROM v$bgprocess
WHERE name = 'SMON'
);
如下查询定位JOB ID为21号进程的pid,spid
SELECT pid,spid FROM v$process
WHERE addr =
(
SELECT paddr FROM v$session
WHERE sid =
(
SELECT sid FROM dba_jobs_running WHERE job = 21
)
);
1.3 TRACEFILE_NAME
显示出当前trace文件的位置
SQL> oradebug tracefile_name
/u02/app/oracle/diag/rdbms/szscpdb/szscdb/trace/szscdb_ora_3860.trc
1.4 UNLIMIT
In Oracle 8.1.5 and below the maximum size of the trace file is restricted by default. This means that large dumps (LIBRARY_CACHE, BUFFERS) may fail.
To remove the limitation on the size of the trace file use
ORADEBUG UNLIMIT
In Oracle 8.1.6 and above the maximum size of the trace file defaults to UNLIMITED
1.5 FULSH
把当前的trace buffer中的数据刷新到trace file中
1.6 CLOSE_TRACE
关闭使用当前的trace file
SQL> oradebug close_trace
Statement processed.
1.7 SUSPEND
该语句将当前的process挂起。
|
SQL> SELECT s.USERNAME,p.pid,p.SPID 2 FROM V$SESSION s,V$PROCESS p 3 WHERE s.PADDR=p.ADDR AND s.USERNAME='HR';
USERNAME PID SPID ------------------------------ ---------- ------------------------ HR 31 3956
SQL> oradebug setospid 3956 Oracle pid: 31, Unix process pid: 3956, image: oracle@szsckj SQL> oradebug suspend -----将spid为2956的会话挂起 Statement processed. SQL> oradebug resume Statement processed. -----取消挂起 |
1.8 DUMPLIST
To list the dumps available in ORADEBUG use
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TRACE_BUFFER_ON |
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TRACE_BUFFER_OFF |
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LATCHES |
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PROCESSSTATE |
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SYSTEMSTATE |
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INSTANTIATIONSTATE |
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REFRESH_OS_STATS |
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CROSSIC |
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CONTEXTAREA |
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HANGDIAG_HEADER |
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HEAPDUMP |
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HEAPDUMP_ADDR |
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POKE_ADDRESS |
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POKE_LENGTH |
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POKE_VALUE |
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POKE_VALUE0 |
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GLOBAL_AREA |
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REALFREEDUMP |
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FLUSH_JAVA_POOL |
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POOL_SIMULATOR |
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PGA_DETAIL_GET |
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PGA_DETAIL_DUMP |
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PGA_DETAIL_CANCEL |
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PGA_SUMMARY |
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MODIFIED_PARAMETERS |
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EVENT_TSM_TEST |
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ERRORSTACK |
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CALLSTACK |
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TEST_STACK_DUMP |
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TEST_GET_CALLER |
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RECORD_CALLSTACK |
|
EXCEPTION_DUMP |
|
BG_MESSAGES |
|
ENQUEUES |
|
KSTDUMPCURPROC |
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KSTDUMPALLPROCS |
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KSTDUMPALLPROCS_CLUSTER |
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SIMULATE_EOV |
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KSFQP_LIMIT |
|
KSKDUMPTRACE |
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DBSCHEDULER |
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LDAP_USER_DUMP |
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LDAP_KERNEL_DUMP |
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DUMP_ALL_OBJSTATS |
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DUMPGLOBALDATA |
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HANGANALYZE |
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HANGANALYZE_PROC |
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HNGDET_MEM_USAGE_DUMP |
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HANGANALYZE_GLOBAL |
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GES_STATE |
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CGS |
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OCR |
|
CSS |
|
CRS |
|
SYSTEMSTATE_GLOBAL |
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GIPC |
|
MMAN_ALLOC_MEMORY |
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MMAN_CREATE_DEF_REQUEST |
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MMAN_CREATE_IMM_REQUEST |
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MMAN_IMM_REQUEST |
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DUMP_ALL_COMP_GRANULE_ADDRS |
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DUMP_ALL_COMP_GRANULES |
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DUMP_ALL_REQS |
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DUMP_TRANSFER_OPS |
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DUMP_ADV_SNAPSHOTS |
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ADJUST_SCN |
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NEXT_SCN_WRAP |
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CONTROLF |
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FLUSH_CACHE |
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FULL_DUMPS |
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BUFFERS |
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RECOVERY |
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SET_TSN_P1 |
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GLOBAL_BUFFER_DUMP |
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BUFFER |
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PIN_BLOCKS |
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BC_SANITY_CHECK |
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PIN_RANDOM_BLOCKS |
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SET_NBLOCKS |
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CHECK_ROREUSE_SANITY |
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DUMP_PINNED_BUFFER_HISTORY |
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KCBO_OBJ_CHECK_DUMP |
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KCB_WORKING_SET_DUMP |
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KCBS_ADV_INT_DUMP |
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KCBI_DUMP_FREELIST |
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REDOLOGS |
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ARCHIVE_ERROR |
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LOGHIST |
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REDOHDR |
|
LOGERROR |
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OPEN_FILES |
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DATA_ERR_ON |
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DATA_READ_ERR_ON |
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DATA_ERR_OFF |
|
BLK0_FMTCHG |
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UPDATE_BLOCK0_FORMAT |
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TR_SET_BLOCK |
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TR_SET_ALL_BLOCKS |
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TR_SET_SIDE |
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TR_CRASH_AFTER_WRITE |
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TR_READ_ONE_SIDE |
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TR_CORRUPT_ONE_SIDE |
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TR_RESET_NORMAL |
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TEST_DB_ROBUSTNESS |
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LOCKS |
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GC_ELEMENTS |
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FILE_HDRS |
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KRB_CORRUPT_INTERVAL |
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KRB_CORRUPT_SIZE |
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KRB_CORRUPT_REPEAT |
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KRB_CORRUPT_OFFSET |
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KRB_PIECE_FAIL |
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KRB_OPTIONS |
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KRB_FAIL_INPUT_FILENO |
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KRB_SIMULATE_NODE_AFFINITY |
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KRB_TRACE |
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KRB_BSET_DAYS |
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KRB_SET_TIME_SWITCH |
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KRB_OVERWRITE_ACTION |
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KRB_CORRUPT_SPHEADER_INTERVAL |
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KRB_CORRUPT_SPHEADER_REPEAT |
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KRB_CORRUPT_SPBITMAP_INTERVAL |
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KRB_CORRUPT_SPBITMAP_REPEAT |
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KRB_CORRUPT_SPBAD_INTERVAL |
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KRB_CORRUPT_SPBAD_REPEAT |
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KRB_UNUSED_OPTION |
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KRBMRSR_LIMIT |
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KRBMROR_LIMIT |
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KRBABR_TRACE |
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KRDRSBF |
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KRC_TRACE |
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KRA_OPTIONS |
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KRA_TRACE |
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FBTAIL |
|
FBINC |
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FBHDR |
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FLASHBACK_GEN |
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KTPR_DEBUG |
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DUMP_TEMP |
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DROP_SEGMENTS |
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TEST_SPACEBG |
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TREEDUMP |
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LONGF_CREATE |
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KDLIDMP |
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ROW_CACHE |
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LIBRARY_CACHE |
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LIBRARY_CACHE_OBJECT |
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CURSORDUMP |
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CURSORTRACE |
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CURSOR_STATS |
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XS_SESSION_STATE |
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SHARED_SERVER_STATE |
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LISTENER_REGISTRATION |
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JAVAINFO |
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KXFPCLEARSTATS |
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KXFPDUMPTRACE |
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KXFPBLATCHTEST |
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KXFXSLAVESTATE |
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KXFXCURSORSTATE |
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KXFRHASHMAP |
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WORKAREATAB_DUMP |
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KUPPLATCHTEST |
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OBJECT_CACHE |
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SAVEPOINTS |
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RULESETDUMP |
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RULESETDUMP_ADDR |
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FAILOVER |
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OLAP_DUMP |
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SELFTESTASM |
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ASMDISK_ERR_ON |
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ASMDISK_READ_ERR_ON |
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ASMDISK_ERR_OFF |
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ASM_EVENREAD |
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IOERREMUL |
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IOERREMULRNG |
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ALRT_TEST |
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AWR_TEST |
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AWR_FLUSH_TABLE_ON |
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AWR_FLUSH_TABLE_OFF |
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ASHDUMP |
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ASHDUMPSECONDS |
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MMON_TEST |
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ATSK_TEST |
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HM_FW_TRACE |
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HM_FDG_VERS |
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IR_FW_TRACE |
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KSDTRADV_TEST |
2.oradebug的使用示例
2.1使用oradebug产生10046事件
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SQL> SELECT s.USERNAME,p.pid,p.SPID 2 FROM V$SESSION s,V$PROCESS p 3 WHERE s.PADDR=p.ADDR AND s.USERNAME='HR';
USERNAME PID SPID ------------------------------ ---------- ------------------------ HR 31 3956
SQL> oradebug setospid 3956 Oracle pid: 31, Unix process pid: 3956, image: oracle@szsckj SQL> oradebug event 10046 trace name context forever, level 12; SQL> oradebug tracefile_name /u02/app/oracle/diag/rdbms/szscpdb/szscdb/trace/szscdb_ora_3956.trc SQL> oradebug event 10046 trace name context off; Statement processed. ##显然有一种高端大气上档次的样子 |
2.2使用oradebug DUMP SGA
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SQL> oradebug setmypid Statement processed. SQL> oradebug dumpsga Statement processed. SQL> oradebug tracefile_name /u02/app/oracle/diag/rdbms/szscpdb/szscdb/trace/szscdb_ora_5035.trc |
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