OracleSQLDeveloper中查看解释计划ExplainPlan的两种⽅法⽅法⼀：⽐如要查看解释计划的SQL是：select * from hy_emp 那么在输⼊窗⼝输⼊：EXPLAIN PLAN FOR select*from hy_emp 之后执⾏，输出窗⼝会出现 Explained. 字样，如下图：之后执⾏select * from table(dbms_xplan.display); 如下：总结...
比如要查看解释计划的SQL是:select * from hy_emp 那么在输入窗口输入: EXPLAINPLANFORselect*fromhy_emp 之后执行,输出窗口会出现Explained. 字样,如下图: 之后执行select * from table(dbms_xplan.display); 如下: 总结步骤如下: 执行: EXPLAIN PLAN FOR SELECT * from * where... 再执行: select * from...
比如要查看解释计划的SQL是:select * from hy_emp 那么在输入窗口输入: EXPLAINPLANFORselect*fromhy_emp 1. 2. 之后执行,输出窗口会出现Explained. 字样,如下图: 之后执行select * from table(dbms_xplan.display); 如下: 总结步骤如下: 执行: EXPLAIN PLAN FOR SELECT * from * where... 再执行: select...
1、直接File->New->Explain Plan Window,在窗口中执行sql可以查看计划结果。其中,Cost表示cpu的消耗,单位为n%,Cardinality表示执行的行数,等价Rows。 2、先执行 EXPLAIN PLAN FOR select * from tableA where paraA=1,再 select * from table(DBMS_XPLAN.DISPLAY)便可以看到oracle的执行计划了,看到的结果和1中...
How To Read The SQL Developer Execution Plan Reading an explain plan is easy, but it takes some time to learn what the information means. As part of my university degree, I majored inOracle databases, and one of our subjects was on performance. We had to analyse queries and write our ow...
6.1ExplainPlan解释计划 KarenMorton You’veseenquiteafewexecutionplansinthefirstchaptersof thisbook,butinthischapterI’mgoing togointodetailabouthowtoproduceandreadplans correctly.I’vebuiltthefoundationofknowledgeyouneedto understandthemostcommonoperationsyou’llseeusedinexecution plans,butyouneedtoputthatknowle...
This is for EXPLAIN PLAN. I want to make this new display for Cached Plans (in V$SQL_PLAN), and anywhere else in the app we show you a plan. And this is ONLY in SQL Developer Web. I want to build this into our desktop tools as well!
This topic covers the main Oracle SQL Developer concepts, and explains how to use the major SQL Developer features.
Oracle SQL Developer 3.0 introduces a DBA Navigator and provides support for DBMS Scheduling. Other features include a new Query Builder, SQL Tuning Advisor, and Explain Plan Diff utility. For a complete list of new features,click here.
F5 not working for me; I still don’t get plan output. Am I missing a step or magic incantation? Otherwise I will just go back to SQLDeveloper 3. Vladimir Sitnikov11 years agoReply >>Note the drop-down control added to the Explain Plan button in the worksheet toolbar. ...