[20141216]sqlplus的set appinfo.txt

--今天學習了sqlplus的set appinfo命令，可以設置module參數。做一個簡單記錄。

--會話1：
SCOTT@test> @ver
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

SCOTT@test> set appinfo test
SCOTT@test> SElect sysdate from dual ;
SYSDATE
-------------------
2014-12-16 16:07:08

SCOTT@test> select * from dept where rownum<=1;
??? DEPTNO DNAME????????? LOC
---------- -------------- -------------
??????? 10 ACCOUNTING???? NEW YORK

--在另外的會話執行，會話2:
SCOTT@test> select sql_id,sql_text,child_number,executions,buffer_gets from v$sql where module='test';
SQL_ID??????? SQL_TEXT???????????????????????????????????????????????????? CHILD_NUMBER EXECUTIONS BUFFER_GETS
------------- ------------------------------------------------------------ ------------ ---------- -----------
20zmcgcrnnrxs SElect sysdate from dual??????????????????????????????????????????????? 0????????? 1?????????? 0
cf2xz73hgrf81 select * from dept where rownum<=1????????????????????????????????????? 0????????? 1????????? 64

--這樣可以定位知道執行語句的sql_id.注意module的大小寫。

SCOTT@test> select * from emp where rownum<=1;
???? EMPNO ENAME????? JOB????????????? MGR HIREDATE?????????????????? SAL?????? COMM???? DEPTNO
---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
????? 7369 SMITH????? CLERK?????????? 7902 1980-12-17 00:00:00??????? 800??????????????????? 20

--會話1執行：
SCOTT@test> select * from emp where rownum<=1;
???? EMPNO ENAME????? JOB????????????? MGR HIREDATE?????????????????? SAL?????? COMM???? DEPTNO
---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
????? 7369 SMITH????? CLERK?????????? 7902 1980-12-17 00:00:00??????? 800??????????????????? 20

--會話2執行：
SCOTT@test> select sql_id,sql_text,child_number,executions,buffer_gets from v$sql where module='test';
SQL_ID??????? SQL_TEXT???????????????????????????????????????????????????? CHILD_NUMBER EXECUTIONS BUFFER_GETS
------------- ------------------------------------------------------------ ------------ ---------- -----------
20zmcgcrnnrxs SElect sysdate from dual??????????????????????????????????????????????? 0????????? 1?????????? 0
cf2xz73hgrf81 select * from dept where rownum<=1????????????????????????????????????? 0????????? 1????????? 64

--看不到執行的select * from emp where rownum<=1;語句，這個因為別的會話已經執行。只要把語句寫的特殊一些，比如加入注解或者
--改變大小寫就ok了。

來自 “ ITPUB博客 ” ，鏈接：http://blog.itpub.net/267265/viewspace-1369832/，如需轉載，請注明出處，否則將追究法律責任。

轉載于:http://blog.itpub.net/267265/viewspace-1369832/

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