DBMS_SUPPORT包从Oracle7.2引入,主要功能用以提供更完整的用户session跟踪信息
这个包可以通过运行 dbmssupp.sql 和 prvtsupp.plb 两个脚本来创建.
该脚本位于$ORACLE_HOME/rdbms/admin目录下
以下版本中都包含这些文件:
8.0.6, 8.1.7, 9.0.1, 9.2.0 and above
1.创建DBMS_SUPPORT Package
SQL> @?/rdbms/admin/dbmssupp.sql
Package created.
Package body created.
SQL> @?/rdbms/admin/prvtsupp.plb
Package body created.
2.主要函数及过程
SQL> desc dbms_support
FUNCTION MYSID RETURNS NUMBER
FUNCTION PACKAGE_VERSION RETURNS VARCHAR2
PROCEDURE START_TRACE
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
WAITS BOOLEAN IN DEFAULT
BINDS BOOLEAN IN DEFAULT
PROCEDURE START_TRACE_IN_SESSION
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SID NUMBER IN
SERIAL NUMBER IN
WAITS BOOLEAN IN DEFAULT
BINDS BOOLEAN IN DEFAULT
PROCEDURE STOP_TRACE
PROCEDURE STOP_TRACE_IN_SESSION
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SID NUMBER IN
SERIAL NUMBER IN
3.简单用法
SQL> SELECT DBMS_SUPPORT.MYSID from DUAL;
MYSID
----------
8
SQL> select dbms_support.PACKAGE_VERSION from dual;
PACKAGE_VERSION
--------------------------------------------------------------------------------
DBMS_SUPPORT Version 1.0 (17-Aug-1998) - Requires Oracle 7.2 - 8.0.5
4.进程跟踪(跟踪当前session及其他session)
SQL> exec dbms_support.start_trace
PL/SQL procedure successfully completed.
SQL> select count(*) from dba_users;
COUNT(*)
----------
34
SQL> exec dbms_support.stop_trace;
PL/SQL procedure successfully completed.
SQL> select sid,serial#,username from v$session
2 /
SID SERIAL# USERNAME
---------- ---------- ------------------------------
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 764 SYS
8 rows selected.
SQL> exec dbms_support.start_trace_in_session(4,1);
PL/SQL procedure successfully completed.
SQL> exec dbms_support.stop_trace_in_session(4,1);
PL/SQL procedure successfully completed.
5.Trace文件
以上跟踪生成的Trace文件可以在udump目录下找到.
SQL> show parameter user_dump
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
user_dump_dest string /opt/oracle/admin/hsjf/udump
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2011-7-24 19:10:15 |
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