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About the plan table. The PLAN_TABLE (see example below) is used to visualize the execution plan. This table is used by most tools that display an explain
7 Feb 2008 Example 3: Displaying the execution plan for any other statement requires the SQL ID to be provided, either directly or indirectly: Directly: SQL> select plan_table_output from 2 table(dbms_xplan.display_cursor('fnrtqw9c233tt',null,'basic')); Example 4: Displaying an execution plan corresponding to a SQL Plan Baseline.
Viewing an execution plan in the Oracle database involves two steps: explain plan for — saves the execution plan in the PLAN_TABLE . Format and display the
19.1 Understanding EXPLAIN PLAN. The EXPLAIN PLAN statement displays execution plans chosen by the Oracle optimizer for SELECT , UPDATE , INSERT , and DELETE statements. A statement's execution plan is the sequence of operations Oracle performs to run the statement.
SQL> EXPLAIN PLAN FOR select * from dept where deptno = 40; 132 SQL> SELECT * FROM TABLE(dbms_xplan.display);
An execution plan includes an access path for each table that the statement As an alternative to running the EXPLAIN PLAN command and displaying the plan
ORACLE-BASE - A quick guide to using AUTOTRACE and EXPLAIN PLAN. The following example show this in practice. CREATE OR REPLACE FUNCTION
ORACLE-BASE - Easily format the output of an explain plan with this The DISPLAY function allows us to display the execution plan stored in the plan table.
Reading an explain plan is important for many reasons, and Oracle SQL tuning tricks to help determine the correct order that the explain plan steps are executed. (see example here where the innermost step is not the first step executed).
For example, if EXPLAIN PLAN output shows that a statement uses an index, this does not SQL - To show plan table output with parallel execution columns.
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