{"id":1516,"date":"2018-11-08T16:56:13","date_gmt":"2018-11-08T08:56:13","guid":{"rendered":"https:\/\/yangtingkun.net\/?p=1516"},"modified":"2018-11-08T17:02:14","modified_gmt":"2018-11-08T09:02:14","slug":"%e5%85%a8%e5%b1%80%e4%ba%8b%e5%8a%a1%e9%94%81%e7%ad%89%e5%be%85%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/yangtingkun.net\/?p=1516","title":{"rendered":"\u5168\u5c40\u4e8b\u52a1\u9501\u7b49\u5f85\u5206\u6790"},"content":{"rendered":"

\u67d0\u5ba2\u6237\u6570\u636e\u5e93\u51fa\u73b0\u4e86\u4e25\u91cd\u7684\u6027\u80fd\u95ee\u9898\uff0c\u5bfc\u81f4\u5e94\u7528\u51fa\u73b0\u5927\u8303\u56f4\u8d85\u65f6\u4ee5\u53ca\u4f1a\u8bdd\u6fc0\u589e\u7b49\u95ee\u9898\uff0c\u591a\u6b21\u5c1d\u8bd5kill session\u90fd\u65e0\u6cd5\u5f7b\u5e95\u89e3\u51b3\u95ee\u9898\uff0c\u91cd\u542f\u540e\u7cfb\u7edf\u6062\u590d\u6b63\u5e38\u3002<\/p>\n

\u62ff\u5230\u6545\u969c\u65f6\u523b\u7684AWR\u62a5\u544a\uff0c\u53ef\u4ee5\u53d1\u73b0\u95ee\u9898\u65f6\u523b\uff0c\u6570\u636e\u5e93\u7684\u4e3b\u8981\u7b49\u5f85\u4e3a\uff1aGlobal transaction acquire instance locks\u548cenq: TX – row lock contention\u3002<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n
Event<\/strong><\/td>\nWaits<\/strong><\/td>\nTime(s)<\/strong><\/td>\nAvg wait (ms)<\/strong><\/td>\n% DB time<\/strong><\/td>\nWait Class<\/strong><\/td>\n<\/tr>\n
Global transaction acquire instance locks<\/td>\n5,342<\/td>\n5,343<\/td>\n1000<\/td>\n74.09<\/td>\nConfiguration<\/td>\n<\/tr>\n
enq: TX – row lock contention<\/td>\n5<\/td>\n1,437<\/td>\n287308<\/td>\n19.92<\/td>\nApplication<\/td>\n<\/tr>\n
DB CPU<\/td>\n<\/td>\n331<\/td>\n<\/td>\n4.59<\/td>\n<\/td>\n<\/tr>\n
direct path read<\/td>\n37,708<\/td>\n72<\/td>\n2<\/td>\n0.99<\/td>\nUser I\/O<\/td>\n<\/tr>\n
log file sync<\/td>\n7,817<\/td>\n12<\/td>\n2<\/td>\n0.16<\/td>\nCommit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\u5176\u4e2dTX \u2013 row lock contention\u7b49\u5f85\u5341\u5206\u5e38\u89c1\uff0c\u8fd9\u4e2a\u7b49\u5f85\u4e8b\u4ef6\u9020\u6210\u5e94\u7528\u7684\u963b\u585e\u4e5f\u5f88\u5bb9\u6613\u7406\u89e3\uff0c\u4f46\u662fGlobal transaction acquire instance locks\u5e76\u4e0d\u662f\u5e38\u89c1\u7b49\u5f85\uff0c\u4ece\u5b57\u9762\u4e0a\u7406\u89e3\uff0c\u662f\u5168\u5c40\u4e8b\u52a1\u5728\u5c1d\u8bd5\u83b7\u53d6\u5b9e\u4f8b\u9501\u3002\u8fd9\u4e2a\u7b49\u5f85\u5728\u7b49\u5f85\u65f6\u95f4\u5360\u6bd4\u4e0a\uff0c\u6d88\u8017\u4e86\u5c06\u8fd175%\u7684DBTIME\u3002<\/p>\n

\u5f53\u7136\u6570\u636e\u5e93\u4e2dTOP 5\u4e2d\u6700\u4e25\u91cd\u7684\u7b49\u5f85\u4e0d\u4e00\u5b9a\u662f\u95ee\u9898\u7684\u6839\u6e90\uff0c<\/p>\n

\u5206\u6790\u95ee\u9898\u65f6\u523b\u7684ASH\u4fe1\u606f\uff0c\u5728\u95ee\u9898\u65f6\u523b\uff0c\u6700\u5148\u51fa\u73b0\u7684\u662f\u5168\u5c40\u4e8b\u52a1\u83b7\u53d6\u9501\u7684\u7b49\u5f85\uff0c\u968f\u540e\u5f00\u59cb\u51fa\u73b0\u884c\u9501\u7b49\u5f85\uff1a<\/p>\n

 <\/p>\n

SQL> select to_char(sample_time, ‘hh24miss’), session_id, event, blocking_session<\/p>\n

2\u00a0 from dba_hist_active_sess_history<\/p>\n

3\u00a0 where sample_time >= to_date(‘201810180652’, ‘yyyymmddhh24mi’)<\/p>\n

4\u00a0 and sample_time <= to_date(‘201810180700’, ‘yyyymmddhh24mi’)<\/p>\n

5\u00a0 and instance_number = 1<\/p>\n

6\u00a0 order by 1, 2;<\/p>\n

 <\/p>\n

TO_CHA SESSION_ID EVENT\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 BLOCKING_SESSION<\/p>\n

—— ———- —————————————— —————-<\/p>\n

065204\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065214\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065224\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065224\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 535<\/p>\n

065234\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065234\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 232<\/p>\n

065234\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0535<\/p>\n

065234\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065244\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065244\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 535 direct path read<\/p>\n

065244\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065244\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065254\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065254\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 535<\/p>\n

065254\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065254\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065304\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065304\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065304\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065314\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065314\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065314\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065324\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065324\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065324\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065324\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763 Global transaction acquire instance locks<\/p>\n

065334\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065334\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065334\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065344\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065344\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065344\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 434 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065344\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065354\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065354\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065354\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 434 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065354\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065404\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 69 Global transaction acquire instance locks<\/p>\n

065404\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 136 Global transaction acquire instance locks<\/p>\n

065404\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 434 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065404\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0763<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

065944\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 302 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065944\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 336 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065944\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 434 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065944\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065954\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 71 Global transaction acquire instance locks<\/p>\n

065954\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 302 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065954\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 336 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065954\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 434 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

065954\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 695 enq: TX – row lock contention\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 763<\/p>\n

 <\/p>\n

216 rows selected.<\/p>\n

 <\/p>\n

\u9996\u5148\u51fa\u73b0\u95ee\u9898\u7684\u662f\u4f1a\u8bdd763\uff0c\u5176\u5904\u4e8eGlobal transaction acquire instance locks\u7b49\u5f85\u4e2d\uff0c\u8be5\u4f1a\u8bdd\u5e76\u672a\u663e\u793a\u88ab\u5176\u4ed6\u4f1a\u8bdd\u963b\u585e\u3002\u4e4b\u540e\u5f00\u59cb\u51fa\u73b0\u4e86\u884c\u9501\u7b49\u5f85\uff0c\u8fd9\u4e9b\u7b49\u5f85enq: TX – row lock contention\u7684\u4f1a\u8bdd\uff0c\u5176\u963b\u585e\u5bf9\u8c61\u90fd\u662f\u4f1a\u8bdd763\u3002<\/p>\n

\u663e\u7136\u5728\u672c\u6b21\u6545\u969c\u4e2d\uff0c\u867d\u7136\u6700\u7ec8\u5bfc\u81f4\u5927\u8303\u56f4\u4e1a\u52a1\u6302\u8d77\u7684\u662fenq: TX – row lock contention\u7b49\u5f85\uff0c\u4f46\u662f\u6700\u7ec8\u95ee\u9898\u7684\u6839\u6e90\u662fGlobal transaction acquire instance locks\u7b49\u5f85\u3002<\/p>\n

\u51e0\u4e4e\u4e0e\u6b64\u540c\u65f6\uff0c\u540e\u53f0\u544a\u8b66\u65e5\u5fd7\u51fa\u73b0\u5927\u91cf\u7684\u62a5\u9519\uff1a<\/p>\n

 <\/p>\n

Thu Oct 18 06:53:33 2018<\/p>\n

opiodr aborting process unknown ospid (26428) as a result of ORA-24756<\/p>\n

Thu Oct 18 06:53:36 2018<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

ORA-24756: transaction does not exist<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

ORA-24756: transaction does not exist<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

ORA-24756: transaction does not exist<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

ORA-24756: transaction does not exist<\/p>\n

 <\/p>\n

\u6570\u636e\u5e93\u4e2d\u51fa\u73b0\u8be5\u7b49\u5f85\u7684\u65f6\u95f4\u70b906:52\uff0c\u518d\u8003\u8651\u5230\u7b49\u5f85\u5728\u62a5\u9519\u524d\u4f1a\u7ecf\u5386\u4e00\u4e2a\u8d85\u65f6\uff0c\u56e0\u6b64\u6570\u636e\u5e93\u4e2d\u7684\u7b49\u5f85\u4e0e\u544a\u8b66\u65e5\u5fd7\u4e2d\u7684ORA-24756\u9519\u8bef\u6709\u5bc6\u5207\u7684\u5173\u7cfb\u3002<\/p>\n

\u4ee5ORA-24756\u4f5c\u4e3a\u5173\u952e\u5b57\u67e5\u8be2MOS\uff0c\u53ef\u4ee5\u627e\u5230\u4e0e\u5f53\u524d\u73b0\u8c61\u975e\u5e38\u63a5\u8fd1\u7684\u6587\u7ae0\uff1aPMON cleanup fails with ORA-24756: transaction does not exist (\u6587\u6863 ID 2299927.1)\u3002<\/p>\n

\u6587\u6863\u4e2d\u63cf\u8ff0\u7684\u62a5\u9519\u73b0\u8c61\u4e0e\u5f53\u524d\u95ee\u9898\u4e00\u81f4\uff0c\u4e14\u6570\u636e\u5e93\u7248\u672c\u4e5f\u5f88\u63a5\u8fd1\u3002Oracle\u8ba4\u4e3a\u8fd9\u4e2a\u9519\u8bef\u662f\u7531\u4e8ePMON\u8fdb\u7a0b\u5728\u6e05\u7406\u4e0d\u5b58\u5728\u7684\u4e8b\u52a1\u65f6\u51fa\u73b0\u4e86\u5361\u4f4f\u7684\u73b0\u8c61\u3002Oracle\u7ed9\u51fa\u4e86\u51e0\u4e2a\u6bd4\u8f83\u7c7b\u4f3c\u7684bug\uff0c\u4f46\u662f\u8fd9\u4e9bbug\u7684\u72b6\u6001\u4e0d\u662f\u4e0d\u53ef\u91cd\u73b0\u5c31\u662f\u5df2\u4e2d\u6b62\uff0c\u56e0\u6b64\u7c7b\u4f3c\u7684\u95ee\u9898\u5e76\u6ca1\u6709\u660e\u786e\u7684\u7ed3\u8bba\uff1a<\/p>\n

Bug 20676168 – PMON GOT CONTINUOUS ORA-24756 DURING SHUTDOWN <<<<<<<<<< Closed, Could Not Reproduce<\/p>\n

Bug 16317766 – EXADATA : ORA-24756: TRANSACTION DOES NOT EXIST <<<<<<<<<<<< Suspended, Req’d Info not Avail<\/p>\n

Bug 9757979 – PMON CLEANUP FAILS WITH ORA-24756: TRANSACTION DOES NOT EXIST <<<<<<<<<<< Closed, Could Not Reproduce<\/p>\n

 <\/p>\n

\u65e0\u8bba\u662fGlobal transaction acquire instance locks\u7b49\u5f85\u8fd8\u662f\u540e\u53f0alert\u65e5\u5fd7\u4e2d\u4e0d\u65ad\u51fa\u73b0\u7684ORA-24756\u9519\u8bef\uff0c\u95ee\u9898\u90fd\u6307\u5411Oracle\u7684\u9501\u548c\u5168\u5c40\u4e8b\u52a1\u5904\u7406\u3002<\/p>\n

\u800c\u4ece11g\u4ee5\u540e\uff0cRAC\u7684\u5168\u5c40\u4e8b\u52a1\u7684\u5904\u7406\u7531\u540e\u53f0\u8fdb\u7a0bGTXn\u6765\u81ea\u52a8\u7ef4\u62a4\u3002\u8be5\u8fdb\u7a0b\u662f\u5426\u542f\u52a8\u53d7\u521d\u59cb\u5316\u53c2\u6570global_txn_processes\u7684\u63a7\u5236\uff0c\u8be5\u53c2\u6570\u9ed8\u8ba4\u503c\u4e3a1\uff0c\u4e5f\u5c31\u662f\u5728\u6570\u636e\u5e93\u542f\u52a8\u7684\u65f6\u5019\u4f1a\u9ed8\u8ba4\u542f\u52a8GTXn\u8fdb\u7a0b\u3002<\/p>\n

\u8be2\u95ee\u5ba2\u6237\u8fd1\u671f\u662f\u5426\u8fdb\u884c\u8fc7\u5e94\u7528\u548c\u6570\u636e\u5e93\u7684\u8c03\u6574\uff0c\u53ef\u4ee5\u786e\u8ba4\u7684\u662f\u5ba2\u6237\u7684\u5e94\u7528\u7a0b\u5e8f\u5e76\u672a\u53d1\u751f\u4efb\u4f55\u53d8\u5316\uff0c\u5728\u4e4b\u524d\u4e5f\u672a\u51fa\u73b0\u8fc7\u7c7b\u4f3c\u7684\u95ee\u9898\uff0c\u4e0d\u8fc7\u5728\u51fa\u73b0\u95ee\u9898\u4e4b\u524d\uff0c\u6570\u636e\u5e93\u505a\u8fc7\u4e3b\u5e93\u548cData Guard\u5907\u5e93\u4e4b\u95f4\u7684\u5207\u6362\u6f14\u7ec3\uff0c\u800c\u5207\u6362\u6f14\u7ec3\u5b8c\u6210\u540e\uff0c\u6062\u590d\u6b63\u5e38\u4e1a\u52a1\u65f6\uff0c\u5c31\u51fa\u73b0\u4e86\u8fd9\u6b21\u6545\u969c\u3002\u663e\u7136\u8fd9\u6b21\u5207\u6362\u6f14\u7ec3\u7684\u64cd\u4f5c\u662f\u88ab\u6000\u7591\u7684\u91cd\u70b9\u3002<\/p>\n

\u5728\u8be6\u7ec6\u68c0\u67e5\u4e86alert\u544a\u8b66\u65e5\u5fd7\u540e\u53d1\u73b0\uff0c\u5728DATA GUARD\u6f14\u7ec3\u540e\u5207\u6362\u56de\u4e3b\u5e93\u65f6\uff0cGTXn\u8fdb\u7a0b\u672a\u542f\u52a8\uff1a<\/p>\n

 <\/p>\n

Thu Oct 18 02:36:18 2018<\/p>\n

alter database commit to switchover to physical standby with session shutdown<\/p>\n

ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY [Process Id: 4366] (orcl1)<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Switchover: Primary controlfile converted to standby controlfile succesfully.<\/p>\n

Switchover: Complete – Database shutdown required<\/p>\n

Completed: alter database commit to switchover to physical standby with session shutdown<\/p>\n

Thu Oct 18 02:45:27 2018<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

RFS[8]: Assigned to RFS process 3216<\/p>\n

RFS[8]: Identified database type as ‘physical standby’: Client is ARCH pid 11990<\/p>\n

Thu Oct 18 03:11:13 2018<\/p>\n

alter database open<\/p>\n

AUDIT_TRAIL initialization parameter is changed to OS, as DB is NOT compatible for database opened with read-only access<\/p>\n

This instance was first to open<\/p>\n

Beginning standby crash recovery.<\/p>\n

Serial Media Recovery started<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Thu Oct 18 03:11:13 2018<\/p>\n

SMON: enabling cache recovery<\/p>\n

Dictionary check beginning<\/p>\n

Dictionary check complete<\/p>\n

Database Characterset is ZHS16GBK<\/p>\n

No Resource Manager plan active<\/p>\n

Starting background process GTX0<\/strong><\/p>\n

Thu Oct 18 03:11:14 2018<\/strong><\/p>\n

GTX0 started with pid=51, OS id=5041<\/strong><\/p>\n

replication_dependency_tracking turned off (no async multimaster replication found)<\/p>\n

Physical standby database opened for read only access.<\/p>\n

Completed: alter database open<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Thu Oct 18 04:57:19 2018<\/p>\n

alter database commit to switchover to primary with session shutdown<\/p>\n

ALTER DATABASE SWITCHOVER TO PRIMARY (orcl1)<\/p>\n

Maximum wait for role transition is 15 minutes.<\/p>\n

Switchover: Media recovery is still active<\/p>\n

Role Change: Canceling MRP – no more redo to apply<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Switchover: Complete – Database mounted as primary<\/p>\n

Completed: alter database commit to switchover to primary with session shutdown<\/p>\n

Thu Oct 18 04:57:39 2018<\/p>\n

alter database open<\/p>\n

This instance was first to open<\/p>\n

Picked broadcast on commit scheme to generate SCNs<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Thu Oct 18 04:57:44 2018<\/p>\n

QMNC started with pid=41, OS id=22585<\/p>\n

LOGSTDBY: Validating controlfile with logical metadata<\/p>\n

LOGSTDBY: Validation complete<\/p>\n

Completed: alter database open<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Thu Oct 18 06:53:33 2018<\/p>\n

opiodr aborting process unknown ospid (26428) as a result of ORA-24756<\/p>\n

Thu Oct 18 06:53:36 2018<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

ORA-24756: transaction does not exist<\/p>\n

Errors in file \/oracle\/app\/oracle\/diag\/rdbms\/orcl\/orcl1\/trace\/orcl1_pmon_30688.trc:<\/p>\n

.<\/p>\n

.<\/p>\n

.<\/p>\n

Starting background process GTX0<\/strong><\/p>\n

Thu Oct 18 09:51:20 2018<\/strong><\/p>\n

GTX0 started with pid=36, OS id=32470<\/strong><\/p>\n

Starting background process RCBG<\/p>\n

Thu Oct 18 09:51:20 2018<\/p>\n

 <\/p>\n

\u4ece\u4e0a\u9762\u8282\u9009\u7684\u90e8\u5206alert\u65e5\u5fd7\u53ef\u4ee5\u770b\u5230\uff0c\u57282\u70b936\u5206\uff0c\u4e3b\u5e93\u6267\u884c\u4e86SWITCHOVER\u64cd\u4f5c\uff0c\u5f00\u59cb\u5207\u6362\u6f14\u7ec3\u3002<\/p>\n

\u57283\u70b911\u5206\uff0c\u6570\u636e\u5e93\u6253\u5f00\uff0calert\u4e2d\u63d0\u793a\uff0c\u5f53\u524d\u6570\u636e\u5e93\u4e3a\u7269\u7406\u5907\u5e93\uff0c\u4e3a\u53ea\u8bfb\u6253\u5f00\u6a21\u5f0f\uff0c\u5728\u968f\u540e\u7684\u65e5\u5fd7\u4e2d\u52a0\u7c97\u7684\u90e8\u5206\uff0c\u663e\u793a\u6b64\u65f6\u540e\u53f0\u8fdb\u7a0bGTX0\u8fdb\u7a0b\u542f\u52a8\u3002<\/p>\n

\u57284\u70b957\u5206\uff0c\u6570\u636e\u5e93\u518d\u6b21\u6267\u884cSWITCHOVER\u5207\u6362\uff0c\u6b64\u65f6\u6570\u636e\u5e93\u5e76\u672a\u5b8c\u5168SHUTDOWN\uff0c\u800c\u662f\u76f4\u63a5\u8f6c\u6362\u4e3aMOUNT\u6a21\u5f0f\uff0c\u5e76\u4e8e4\u70b957\u520644\u79d2\u5b8c\u6210\u4e86\u6570\u636e\u5e93\u7684OPEN\u8fc7\u7a0b\u3002\u4f46\u662f\u8fd9\u4e2a\u65f6\u95f4\u6bb5\u7684alert\u4e2d\u5e76\u672a\u53d1\u73b0GXTn\u8fdb\u7a0b\u7684\u542f\u52a8\u3002<\/p>\n

\u800c\u5728alert\u4e2d\u53d1\u73b0GTX0\u8fdb\u7a0b\u518d\u6b21\u51fa\u73b0\uff0c\u662f\u6545\u969c\u4e4b\u540e\u5b9e\u4f8b1\u91cd\u542f\u65f6\u523b\u76849\u70b951\u5206\u3002<\/p>\n

\u663e\u7136\uff0c\u95ee\u9898\u5df2\u7ecf\u975e\u5e38\u660e\u786e\uff0c\u5728\u6570\u636e\u5e93\u7531\u7269\u7406\u5907\u5e93\u5207\u6362\u4e3a\u4e3b\u5e93\u7684\u8fc7\u7a0b\u4e2d\uff0cGTXn\u8fdb\u7a0b\u6ca1\u6709\u542f\u52a8\uff0c\u8fd9\u5bfc\u81f4\u4e86Oracle\u65e0\u6cd5\u5904\u7406\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u9501\u95ee\u9898\uff0c\u56e0\u6b64\u524d\u53f0\u4f1a\u8bdd\u51fa\u73b0Global transaction acquire instance locks\u7b49\u5f85\uff0c\u800c\u540e\u53f0PMON\u4e5f\u65e0\u6cd5\u6b63\u5e38\u7684\u6e05\u7406\u4f1a\u8bdd\u548c\u4e8b\u52a1\u3002<\/p>\n

\u7531\u4e8e\u5b9e\u4f8b2\u5728SWITCHOVER\u5207\u6362\u8fc7\u7a0b\u4e2d\u662f\u88abSHUTDOWN\u540e\u91cd\u65b0\u542f\u52a8\u7684\uff0c\u56e0\u6b64\u5b9e\u4f8b2\u4e0a\u7684GTXn\u8fdb\u7a0b\u662f\u6b63\u5e38\u542f\u52a8\u7684\uff0c\u8fd9\u4e5f\u662f\u5e94\u7528\u5207\u6362\u5230\u5b9e\u4f8b2\u4e0a\u4e0d\u5728\u51fa\u73b0\u6545\u969c\u7684\u539f\u56e0\u3002<\/p>\n

\u5982\u679c\u8981\u907f\u514d\u7c7b\u4f3c\u7684\u95ee\u9898\u4ea7\u751f\uff0c\u4e00\u65b9\u9762\u5728\u8fdb\u884cDATA GUARD\u7684\u5207\u6362\u6f14\u7ec3\u540e\uff0c\u5728\u4e3b\u5e93\u5207\u6362\u5230PRIMARY\u6a21\u5f0f\u540e\uff0c\u518d\u6267\u884c\u4e00\u6b21\u6570\u636e\u5e93\u91cd\u542f\u7684\u64cd\u4f5c\uff0c\u786e\u4fdd\u6240\u6709\u5fc5\u8981\u7684\u8fdb\u7a0b\u90fd\u4f1a\u542f\u52a8\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5bf9\u4e8e\u5e94\u7528\u7a0b\u5e8f\uff0c\u5982\u679c\u786e\u5b9e\u9700\u8981\u4fee\u6539\u5176\u4ed6\u6570\u636e\u5e93\u4e2d\u7684\u8868\uff0c\u5e94\u8be5\u901a\u8fc7\u5efa\u7acb\u5176\u4ed6\u6570\u636e\u5e93\u8fde\u63a5\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\uff0c\u907f\u514d\u5728\u6570\u636e\u5e93\u4e2d\u901a\u8fc7\u6570\u636e\u5e93\u94fe\u7684\u65b9\u5f0f\u76f4\u63a5\u66f4\u65b0\u8fdc\u7aef\u8868\u3002<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u67d0\u5ba2\u6237\u6570\u636e\u5e93\u51fa\u73b0\u4e86\u4e25\u91cd\u7684\u6027\u80fd\u95ee\u9898\uff0c\u5bfc\u81f4\u5e94\u7528\u51fa\u73b0\u5927\u8303\u56f4\u8d85\u65f6\u4ee5\u53ca\u4f1a\u8bdd\u6fc0\u589e\u7b49\u95ee\u9898\uff0c\u591a\u6b21\u5c1d\u8bd5kill session\u90fd\u65e0\u6cd5\u5f7b\u5e95\u89e3\u51b3\u95ee\u9898\uff0c\u91cd\u542f\u540e\u7cfb\u7edf\u6062\u590d\u6b63\u5e38\u3002 \u62ff\u5230\u6545\u969c\u65f6\u523b\u7684AWR\u62a5\u544a\uff0c\u53ef\u4ee5\u53d1\u73b0\u95ee\u9898\u65f6\u523b\uff0c\u6570\u636e\u5e93\u7684\u4e3b\u8981\u7b49\u5f85\u4e3a\uff1aGlobal transaction acquire instance locks\u548cenq: TX – row lock contention\u3002   Event Waits Time(s) Avg wait (ms) % DB time Wait Class Global transaction acquire instance locks 5,342 5,343 1000 74.09 Configuration enq: TX – row lock contention … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[1298,1299,170],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2yiY3-os","_links":{"self":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1516"}],"collection":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1516"}],"version-history":[{"count":2,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1516\/revisions"}],"predecessor-version":[{"id":1518,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=\/wp\/v2\/posts\/1516\/revisions\/1518"}],"wp:attachment":[{"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangtingkun.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}