what is explain plan?

Answer Posted / veereshkethari

The explain plan command is a tool to tune SQL statements.To
use if you must have an explain_table generated in the user
you are running the explain plan for.This is created by
using the utlxplan.sql script.once the explain plan table
exists u run the explain plan command giving as it's
argument the SQL statement to be explained.The explain_plan
table is then queried to see the execution plan of the
statement.Explain plan can also be run using tkprof.

Is This Answer Correct ?    11 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what are the different tables present in mysql? : Sql dba

678


Can a varchar be a primary key?

698


What are the types of records?

743


What is a sql instance vs database?

764


Write a sql select query that only returns each name only once from a table?

759






Can we create a trigger on view?

668


What is the use of partition by in sql?

715


what is the difference between nested subquery and correlated subquery?

746


How can check sql version from command line?

722


what are the system privileges that are required by a schema owner (user) to create a trigger on a table?

811


When do we use triggers?

800


Where are my tempfiles, I don't see them in v$datafile or dba_data_file?

734


what is schema? : Sql dba

742


Is sqlexception checked or unchecked?

723


Which nosql database is best?

679