PL/SQL developer 开发小技能 and ash show command PL/SQL EXECUTE

 

#########sample 0

---如何在 PL/SQL Block 端查看执行的SQL.

The SQL statement within the PL/SQL block is actually stored separately, but you cannot see it because:

• every sql statement in a PL/SQL block is stored as capital letters
• every comment and INTO clause are removed
• 由于pl/sql 每一个块都是封装的,PL/SQL 块中的每一个 sql 语句都存储为大写字母,因此查看PL/SQL 代码能够小写。
•  可是在查询V$SQL 咱们应该去掉into 选项，而且要全部字母要大写

How to Determine the SQL_ID of a SQL Statement in a PL/SQL Block

 

 

OLUTION

If you have a PL/SQL block such as:

declare v1 number; 
begin 
  select /* SimpleTest */ sum(sal) into v1 from emp; 
end; 
/

Then if you try to find the SQL_ID from v$sql then you will see the SQL_ID of the PL/SQL block NOT the SQL itself:

SQL> select sql_id, sql_text from v$sql where sql_text like '%SimpleTest%';

SQL_ID        SQL_TEXT
------------- ----------------------------------------------------------------------------------
77hjjr9qgwtzm declare v1 number; begin select /* SimpleTest */ sum(sal) into v1 from emp; end;

The SQL statement within the PL/SQL block is actually stored separately, but you cannot see it because:

• every sql statement in a PL/SQL block is stored as capital letters
• every comment and INTO clause are removed
• 由于pl/sql 每一个块都是封装的
• 可是在V$SQL 咱们应该去掉into 选项

Note that optimizer hints are preserved.

In other words,

select /* SimpleTest */ sum(sal) into v1 from emp

is stored as

SELECT SUM(SAL) FROM EMP

In order to find it's SQL_ID you would need to search on something similar to the following:

SQL> select sql_id, sql_text from v$sql where sql_text like '%SUM(SAL)%EMP%';

SQL_ID        SQL_TEXT
------------- -------------------------------
5mqhh85sm278a SELECT SUM(SAL) FROM EMP

The SQL_ID can also be determined by using the hash_value from a SQL_TRACE. The hash value can be seen in the raw trace file identified by the "hv=" string.

.................................................
PARSING IN CURSOR #1 len=24 dep=1 uid=54 oct=3 lid=54 tim=1194298465705687 hv=1899044106 ad='997aa660' 
SELECT SUM(SAL) FROM EMP
END OF STMT
..................

In this case the hash value is 1899044106. To find the SQL_ID using the hash value use the following select:

SQL> SELECT sql_id, hash_value, SUBSTR(sql_text,1,40) Text
FROM v$sql
WHERE  hash_value = &Hash_Value; 

SQL_ID        HASH_VALUE SQL_TEXT
------------- ---------- -------------------------------
5mqhh85sm278a 1899044106 SELECT SUM(SAL) FROM EMP

 

 

 

####sample 1

https://www.askmaclean.com/archives/vsqlcommand-sql-opcodes-and-names.html

ash 报告显示 表明都是存储过程封装好的SQL.

V$SQLCOMMAND SQL opcodes and names

47 PL/SQL EXECUTE 
ash 报告显示 表明都是存储过程封装好的SQL. 所以没法经过AWR和ASH 报告看出，

所以须要进一步查看里面的查询 有2个方法，

方法1：使用PL/SQL developer 查看源代码，争取从源代码中找到相关的SQL语句以及表，固然这个比较麻烦，具体能够查看sample 2



方法2：
经过方法1 查找到的表，进一步须要经过V$sql进一步查看， 查找到SQL,在根据执行次数排序，排序越在前的SQL语句就越多是关键语句。

select * from v$sql where sql_text like '%TRAN_AMT%'

 

###sample 2

https://blog.csdn.net/sinat_35512702/article/details/80937840

->经过在PLSQL Developer 中查看存储过程源码

https://blog.csdn.net/sinat_35512702/article/details/80937840

->.在Package bobodies 中找到存储过程所在的包名，好比TOOL，右键，选择Edit Spec & Body

->.以下图操做，在存储过程名上按住CTRL键  + 右键双击

 

1.在Package bobodies 中找到存储过程所在的包名，好比TOOL，右键，选择Edit Spec & Body

  

2.找到你要查看的存储过程，点击一下

3.以下图操做，在存储过程名上按住CTRL键  + 右键双击

4.该存储过程源码就能够看见了

 

 

 

 

 

##########sample 3:

https://blog.csdn.net/zjxbllg2008/article/details/82380812

手工查看存储过程的包含的关键字

oracle

##for

select * from all_source t where type = 'PROCEDURE' and text like '%mainacc%'
select * from all_source t where type = 'FUNCTION' and text like '%mainacc%'
select * from all_source t where type = 'PACKAGE BODY' and text like '%mainacc%'

 

查找存储过程

1	select t.name,t.text from all_source t where type = 'PROCEDURE' and text like '%var_app_1_pst%'

查找函数

1	select t.name,t.text from all_source t where type = 'FUNCTION' and text like '%var_app_1_pst%'

MSSQL

1 2 3 4

select b.name from 数据库名.dbo.syscomments a, 数据库名.dbo.sysobjects b where a.id=b.id  and b.xtype='p' and a.text like '%key words%' order by name

 

Oracle中，若是关键字是一张表的话，还能够经过表的Referenced by属性找到相关的函数、存储过程和触发器等。

如：

MSSQL相似。

 

oracle数据库中如何查看已经建立的索引信息

1. 根据表名，查询一张表的索引

1	select * from user_indexes where table_name=upper('表名');

2. 根据索引号，查询表索引字段

1	select * from user_ind_columns where index_name=('索引名');

3.根据索引名，查询建立索引的语句

1	select dbms_metadata.get_ddl('INDEX','索引名', ['用户名']) from dual ; --['用户名']可省，默认为登陆用户

PS：dbms_metadata.get_ddl还能够获得建表语句，如：

1 2	SELECT DBMS_METADATA.GET_DDL('TABLE','表名', ['用户名']) FROM DUAL ; //取单个表的建表语句，['用户名']可不输入，默认为登陆用户 SELECT DBMS_METADATA.GET_DDL('TABLE',u.table_name) FROM USER_TABLES u; //取用户下全部表的建表语句

固然，也能够用pl/sql developer工具来查看相关的表的各类信息。