使用SQL_TRACE进行数据库诊断

发布时间：2020-08-05 10:31:07 来源：ITPUB博客阅读：159 作者：不一样的天空w 栏目：关系型数据库

http://www.eygle.com/case/Use.sql_trace.to.Diagnose.database.htm

包dbms_system定义如下：
SQL> desc dbms_system
PROCEDURE ADD_PARAMETER_VALUE
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME                        VARCHAR2                IN
VALUE                          VARCHAR2                IN
SCOPE                          VARCHAR2                IN     DEFAULT
SID                            VARCHAR2                IN     DEFAULT
POSITION                       BINARY_INTEGER          IN     DEFAULT
PROCEDURE DIST_TXN_SYNC
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
INST_NUM                       NUMBER                  IN
PROCEDURE GET_ENV
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
VAR                            VARCHAR2                IN
VAL                            VARCHAR2                OUT
PROCEDURE KCFRMS
PROCEDURE KSDDDT
PROCEDURE KSDFLS
PROCEDURE KSDIND
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
LVL                            BINARY_INTEGER          IN
PROCEDURE KSDWRT
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
DEST                           BINARY_INTEGER          IN
TST                            VARCHAR2                IN
PROCEDURE READ_EV
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
IEV                            BINARY_INTEGER          IN
OEV                            BINARY_INTEGER          OUT
PROCEDURE REMOVE_PARAMETER_VALUE
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME                        VARCHAR2                IN
VALUE                          VARCHAR2                IN
SCOPE                          VARCHAR2                IN     DEFAULT
SID                            VARCHAR2                IN     DEFAULT
PROCEDURE REMOVE_PARAMETER_VALUE
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME                        VARCHAR2                IN
POSITION                       BINARY_INTEGER          IN
SCOPE                          VARCHAR2                IN     DEFAULT
SID                            VARCHAR2                IN     DEFAULT
PROCEDURE SET_BOOL_PARAM_IN_SESSION
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
SID                            NUMBER                  IN
SERIAL#                        NUMBER                  IN
PARNAM                         VARCHAR2                IN
BVAL                           BOOLEAN                 IN
PROCEDURE SET_EV
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
SI                             BINARY_INTEGER          IN
SE                             BINARY_INTEGER          IN
EV                             BINARY_INTEGER          IN
LE                             BINARY_INTEGER          IN
NM                             VARCHAR2                IN
PROCEDURE SET_INT_PARAM_IN_SESSION
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
SID                            NUMBER                  IN
SERIAL#                        NUMBER                  IN
PARNAM                         VARCHAR2                IN
INTVAL                         BINARY_INTEGER          IN
PROCEDURE SET_SQL_TRACE_IN_SESSION
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
SID                            NUMBER                  IN
SERIAL#                        NUMBER                  IN
SQL_TRACE                      BOOLEAN                 IN
PROCEDURE WAIT_FOR_EVENT
Argument Name                  Type                    In/Out Default?
------------------------------ ----------------------- ------ --------
EVENT                          VARCHAR2                IN
EXTENDED_ID                    BINARY_INTEGER          IN
TIMEOUT                        BINARY_INTEGER          IN

一、针对别的窗口开启sql_trace功能，此功能可以在sql执行前开启，也可以在sql执行后开启。

--开启sql_trace功能
exec dbms_system.set_sql_trace_in_session(42,1853,true);

--关闭sql_trace功能
exec dbms_system.set_sql_trace_in_session(42,1853,false);

--查询trace文件位置：
select c.value || '/' || d.instance_name || '_ora_' || a.spid || '.trc' trace
FROM v$process a, v$session b, v$parameter c, v$instance d
WHERE a.addr = b.paddr
   AND b.audsid = userenv('sessionid')
   AND c.name = 'user_dump_dest';

二、针对别的窗口开启10046事件，此功能可以在sql执行前开启，也可以在sql执行后开启。
--开启10046事件
exec dbms_system.set_ev(42,1853,10046,12,'');

--关闭10046事件
exec dbms_system.set_ev(42,1853,10046,0,'');

--查询trace文件位置：
select c.value || '/' || d.instance_name || '_ora_' || a.spid || '.trc' trace
FROM v$process a, v$session b, v$parameter c, v$instance d
WHERE a.addr = b.paddr
   AND b.audsid = userenv('sessionid')
   AND c.name = 'user_dump_dest';

向AI问一下细节

使用SQL_TRACE进行数据库诊断

http://www.eygle.com/case/Use.sql_trace.to.Diagnose.database.htm

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