explain plan


In order to show explain plan which command I can use for select * from dual...
nobleitAsked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
http://download.oracle.com/docs/cd/B10500_01/server.920/a96533/ex_plan.htm#17522
select * from plan_table

at least, I presume that is what you are looking for
0
BarryMcGillinCommented:
You can also use SQL Developer for free,
run you query and hit the explain plan button on the worksheet

http://www.oracle.com/technetwork/developer-tools/sql-developer/overview/index.html

B
0
vippinCommented:
Check if plan_table  exist. if not create it by running the sql $ORACLE_HOME/rdbms/admin/utlxplan.sql
set autotrace on. then run your query.
0
slightwv (䄆 Netminder) Commented:
>>Check if plan_table  exist. if not create

In newer versions of Oracle it is not a Global Temporary Table.  You no longer need to create your own copy.

>>for select * from dual

I prefer:

select * from table(dbms_xplan.display);
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manzoor_dbaCommented:
Hi,

First you need to explain the query then select the output from plan table.
Eg:-
SQL> explain plan for select sysdate from dual;
Explained.
SQL> select * from table (dbms_xplan.display);
PLAN_TABLE_OUTPUT
----------------------------------------------------------------------------
-------
Plan hash value: 1388734953

-----------------------------------------------------------------
| Id  | Operation        | Name | Rows  | Cost (%CPU)| Time     |
-----------------------------------------------------------------
|   0 | SELECT STATEMENT |      |     1 |     2   (0)| 00:00:01 |
|   1 |  FAST DUAL       |      |     1 |     2   (0)| 00:00:01 |
-----------------------------------------------------------------

Thanks

0

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