[Block Dump]
[Disk + Buffer]
alter system checkpoint;
alter system dump datafile block ;
alter system dump datafile block min block max ;
[Buffer Only]
alter session set events 'immediate set_tsn_p1(5)'; -- TS#+1
alter session set events 'immediate buffer(16777741)'; -- RDBA(decimal)
[Flush Cache]
alter session set events 'immediate trace name flush_cache';
[Heap Dump]
alter session set events 'immediate heapdump (n)';
Level 1: Top PGA
Level 2: Top SGA (Shared Pool)
Level 4: Top UGA
Level 8: Current call (CGA)
Level 16: User call (CGA)
Level 32: Large pool
Level 64: Streams pool
Level 128: Java pool
Level 1025: PGA with contents
Level 2050: SGA with contents
Level 4100: UGA with contents
Level 8200: Current call with contents
Level 16400: User call with contents
Level 32800: Large pool with contents
Level 65600: Streams pool with contents
Level 131200: Java pool with contents
[Sub Heap Dump]
alter session set events 'immediate heapdump_addr (address=n [, level = 2])';
n はサブ・ヒープ ds のアドレスとなります。
1. ds フィールドの値を見ます。
2. 値を 10 進数（ decimal ）に直します。
3. HEAPDUMP_ADDR イベントの address パラメータに、その値を指定します。
4. チャンクの内容をダンプする (with contents) には、 2 以上のレベルを指定します。
[Library Cache Dump]
alter session set events 'immediate library_cache (n)';
Level 1: ライブラリ･キャッシュ統計
Level 2: ハッシュ･テーブルのサマリ
Level 4: 各 LCO の Partial 情報 ( オブジェクト・ハンドル )
Level 8: 各 LCO の More 情報 ( オブジェクト・ハンドル + ヒープ 0)
Level 16: 各 LCO の Most 情報 ( オブジェクト・ハンドル +ヒープ 0+ 子カーソル)
Level 32: ヒープ ･ダンプを 追加 ( レベル 8,16 との組み合わせで使用 )
Level 64: 子カーソルの情報を追加 ( レベル 4 または 8 との組み合わせで使用 )
Level 2048: ダンプ時に LCO の Mutex を獲得しない
Level 8192: 各 LCO の Least 情報 ( オブジェクト・ハンドルの一部 )
[System State Dump]
alter session set events 'immediate systemstate (n)';
Level 1 Very basic process information only
Level 10 Most common level - includes state object trees for all processes.
Includes "interesting" RAC resources in the trace (in RAC only).
Level 11 In RAC level 11 includes a dump of any resources not on the freelist
just after the "BUSY GLOBAL CACHE ELEMENTS" section.
Level + 256 Adding 256 to the level will try to dump short stack info for each
process when the enhancement described in Note:3797523.8 is present.
*** IMPORTANT ***
Short stacks are produced reasonably quickly on Solaris and Linux but
on other platforms including short stacks in dumps can take a very
long time. Hence it is advisable to test if the overhead is acceptable
before using this option.
[All Node System State Dump on RAC]
alter session set events 'immediate systemstate_global (11)';
[Hang Analyze]
alter session set events 'immediate hanganalyze (n)';
Level 1 Very minimal output
Level 2 Minimal output
Level 3 Dump only processes thought to be in a hang <<< Most common level
Level 4 Dump leaf nodes in wait chains
Level 5 Dump all processes involved in wait chains (can be a lot)
Level 6 Dump errorstacks of processes involved in wait chains (can be high overhead)
Level 10 Dump all processes (not a good idea)
[Event Dump]
alter session set events 'immediate eventdump(system)';
alter session set events 'immediate eventdump(process)';
alter session set events 'immediate eventdump(session)';
oradebug setmypid
oradebug eventdump session // セションレベルで設定されたすべてのイベントが出力されます。
[Error Stack Dump]
level 1 errorstack とcall stack
level 2 level 1 の内容に加え、 process state
level 3 level 2 の内容に加え、コンテキスト領域 (カーソルダンプ )
[argument]
alter system set events '600 {errarg: "723" } heapdump(536870925)';
alter system set events '600 {errarg:arg1="kglLock-bad-byd"} library_cache(10)';
alter system set events '600 {errarg:arg1="kslgetl:1"} heapdump(2)';
alter system set events '600 {errarg:arg1="kksfbc-wrong-kkscsflgs"| "kglLock-bad-byd" } library_cache(11)';
[call stack]
alter system set events '7445 {callstack:fprefix=kgl|fprefix=kgh} heapdump(2)';
alter system set events '4031 {callstack:fname=kmgsb_parse_io_pool_query} heapdump(2)';
[disable]
alter system set events '7445 off : 4031 off';
[SQL Trace]
Level 1 通常の SQL_TRACE
Level 4 SQL_TRACE とバインド変数
Level 8 SQL_TRACE とwait events
Level 12 SQL_TRACE とバインド変数と wait events
[10046]
alter session set tracefile_identifier='10046';
alter session set timed_statistics = true;
alter session set statistics_level=all;
alter session set max_dump_file_size = unlimited;
alter session set events '10046 trace name context forever,level 12';
-- 対処のクエリあるいは処理を実行します --
exit;
カレントセッションを終了せず、以下のようにトレース設定を解除できます :
alter session set events '10046 trace name context off';
[process]
alter system set events 'sql_trace{process: orapid=20}';
alter system set events 'sql_trace{process: ospid=6137}';
alter system set events 'sql_trace{process: 23234}';
alter system set events 'sql_trace{process: pname=pmon}'
alter system set events 'sql_trace{process: pname=ora}';
alter system set events 'sql_trace{process: pname=m00}';
alter system set events 'sql_trace{process: pname=cjq}';
alter system set events 'sql_trace{process: pname=s00}';
alter system set events 'sql_trace{process: pname=dw | pname=dm} level=12';
[SQL ID]
alter session set events 'sql_trace[sql: g3yc1js3g2689]';
alter session set events 'sql_trace[sql: g3yc1js3g2689 | 7ujay4u33g337]'
[disable]
alter system set events 'sql_trace off';
alter system set events 'sql_trace {process : pname = dw | pname = dm} off';
[Optimizer]
[10053]
alter session set tracefile_identifier='10053';
alter session set timed_statistics = true;
alter session set statistics_level=all;
alter session set max_dump_file_size = unlimited;
alter session set events '10053 trace name context forever,level 1';
-- 対処のクエリあるいは処理を実行します --
exit;
カレントセッションを終了せず、以下のようにトレース設定を解除できます :
alter session set events '10053 trace name context off';
// 10053 は以下のトレースをすべて設定する場合相当する
alter session set events 'trace[RDBMS.SQL_OPTIMIZER]';
alter session set events 'trace[RDBMS.SQL_Transform]';
alter session set events 'trace[RDBMS.SQL_MVRW]';
alter session set events 'trace[RDBMS.SQL_VMerge]';
alter session set events 'trace[RDBMS.SQL_Virtual]';
alter session set events 'trace[RDBMS.SQL_APA]';
alter session set events 'trace[RDBMS.SQL_Costing]';
alter session set events 'trace[RDBMS.SQL_Parallel_Optimization]';
alter session set events 'trace[RDBMS.SQL_Plan_Management]';
[trace]
alter session set events 'trace[sql_optimizer.*] disk=highest, memory=low';
alter session set events 'trace[SQL_Transform]';
alter session set events 'trace[SQL_APA]';
alter session set events 'trace[SQL_Costing]';
alter session set events 'trace[SQL_PlanManagement]';
[Enqueue]
alter session set events 'immediate trace name enqueues level 3';