[20160720]查看了解oracle跟踪事件.txt
--作为dba偶尔会使用一些跟踪事件，比较有名的是10046，10053.其他使用很少事情，更别说记忆。
--如果查询特定的事件可以使用oerr 命令。例子：
$ oerr ora 10046
10046, 00000, "enable SQL statement timing"
// *Cause:
// *Action:
--通过如下命令可以获得全表跟踪事件：
SET linesize 120
SET feedback off
SET SERVEROUTPUT ON
DECLARE
err_msg VARCHAR2 (1200);
BEGIN
DBMS_OUTPUT.ENABLE (1000000);
FOR err_num IN 10000 .. 10999
LOOP
err_msg := SQLERRM (-err_num);
IF err_msg NOT LIKE '%Message ' || err_num || ' not found%'
THEN
DBMS_OUTPUT.put_line (err_msg);
END IF;
END LOOP;
END;
/
--BTW：如果修改err_num范围1 .. 9999,可以获得常见错误表。
--但是这样，要模糊查询确实不是非常方便。实际上oerr读取的就是$ORACLE_HOME/rdbms/mesg/oraus.msb，而原文件就是
--$ORACLE_HOME/rdbms/mesg/oraus.msg 文本文件。
--直接打开查询就可以了解许多。在简单一点写一个命令,grep ^10[0-9][0-9][0-9] $ORACLE_HOME/rdbms/mesg/oraus.msg | grep -i $1
--就可以查询相关信息事件。
--可以写一个别名放在.bashrc 中。例如：
alias ooerr='grep ^10[0-9][0-9][0-9] $ORACLE_HOME/rdbms/mesg/oraus.msg | grep -i $1'
$ ooerr 10046
10046, 00000, "enable SQL statement timing"
$ ooerr undo
10015, 00000, "Undo Segment Recovery"
10016, 00000, "Undo Segment extend"
10017, 00000, "Undo Segment Wrap"
10023, 00000, "Create Save Undo Segment"
10024, 00000, "Write to Save Undo"
10026, 00000, "Apply Save Undo"
10041, 00000, "dump undo records skipped"
10044, 00000, "free list undo operations"
10048, 00000, "Undo segment shrink"
10201, 00000, "consistent read undo application"
10218, 00000, "dump uba of applied undo"
10221, 00000, "show changes done with undo"
10226, 00000, "trace CR applications of undo for data operations"
10251, 00000, "check consistency of transaction table and undo block"
10291, 00000, "die in tbsdrv to test control file undo"
10449, 00000, "enable trace of kst for undo manageability features diagnostics"
10511, 00000, "turn off SMON check to cleanup undo dictionary"
--这样查询就比较方便。