To use the DISPLAY_SQLSET functionality, the calling user must have SELECT privilege on ALL_SQLSET_STATEMENTS and ALL_SQLSET_PLANS. Wth the usual disclaimer of: I might have missed something… EXPLAIN PLAN is not affected by the "ALTER SESSION SET CURRENT_SCHEMA" command. The child_number can be specified only if sql_id is specified. Hence, information related to the parallelization of the plan is not reported. http://sonoportal.net/error-cannot/error-cannot-fetch-last-explain-plan-from-plan-table-dbms-xplan.html
Pruning, parallel and predicate information are only displayed when applicable. Post to Cancel MenuExperts Exchange Browse BackBrowse Topics Open Questions Open Projects Solutions Members Articles Videos Courses Contribute Products BackProducts Gigs Live Courses Vendor Services Groups Careers Store Headlines Website Testing If not supplied, the database_id of the local database will be used, as shown in V$DATABASE.
Syntax DBMS_XPLAN.DISPLAY_SQLSET( sqlset_name IN VARCHAR2, sql_id IN VARCHAR2, plan_hash_value IN NUMBER := NULL, format IN VARCHAR2 := 'TYPICAL', sqlset_owner IN VARCHAR2 := NULL) RETURN DBMS_XPLAN_TYPE_TABLE PIPELINED; Parameters Table 132-5 DISPLAY_SQLSET Function TYPICAL: This is the default. DBA_HIST_SQLTEXT, and V$DATABASE, otherwise it will show an appropriate error message. Anyway it looked something like this: SQL> select owner, object_name, object_type from dba_objects where object_name = 'PLAN_TABLE'; OWNER OBJECT_NAME OBJECT_TYPE ------------------------------ ----------- ------------------- PUBLIC PLAN_TABLE SYNONYM APP_SCHEMA PLAN_TABLE TABLE USER01 PLAN_TABLE
But there is even more attractive syntaxes for those who do not want to spend their time calculating the partition name EXPLAIN PLAN FOR SELECT SGENERAL, count(1) FROM TRANSACTIONS PARTITION FOR Create Plan Table The uid for the explain plan statement is 33 (so it sees HR's employees table), but the insert into plan_table is uid 40 (‘GARY'). Looking at the following execution plan, the order of the operations is 4, 5, 3, 6, 2, 9, 10, 8, 7, 1, 0. --------------------------------------------------------------------------------------------------- | Id | Operation | Name | https://www.experts-exchange.com/questions/28897774/Error-cannot-fetch-last-explain-plan-from-PLAN-TABLE.html This can be caused by the serveroutput sql plus system variable because it will add always an extra statement.
I created a user MNASH and created a PLAN_TABLE in MNASH's schema using $ORACLE_HOME/rdbms/admin/utlxplan.sql. ORAganism Blog at WordPress.com. If for any reason you think you still need a plan table, I think you can create one exactly like the original in your account by using the result of this Go to main content 139/206 132 DBMS_XPLAN The DBMS_XPLAN package provides an easy way to display the output of the EXPLAIN PLAN command in several, predefined formats.
Each keyword either represents a logical group of plan table columns (such as PARTITION) or logical additions to the base plan table output (such as PREDICATE). However, if we have to learn that DDL, gathering statistics, etc perform implicit commits then why not just add EXPLAIN PLAN to that list? Error Cannot Fetch Plan For Statement_id Autotrace Since typical is default, using simply 'PROJECTION' is equivalent. DISPLAY_CURSOR - to format and display the contents of the execution plan of any loaded cursor.
Use 'TYPICAL PROJECTION' to display using the typical format with the additional projection section (which is normally excluded under the typical format). http://sonoportal.net/error-cannot/error-cannot-fetch-plan-for-statement-id.html Excludes only PROJECTION, ALIAS and REMOTE SQL information (see below). Just turn it off. SQL> In the extended output, the "Ord" column displays the execution order of the plan steps.
The following example show the advanced output from a query on the SCOTT schema. This doesn't necessarily follow, but it was the first reason I could think of why Oracle would not code EXPLAIN PLAN to automatically commit… But, that raised the question (in my Report message to a moderator Re: Explain Plan [message #237705 is a reply to message #237690] Tue, 15 May 2007 08:54 tarmenel Messages: 63Registered: February 2007 Location: Israel Source QB_NAME Hint Sometimes the same table is included in a query multiple times, so it is hard to know which operation in the execution plan refers to which reference to the
eh. –gumol Sep 2 '14 at 1:15 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign Join our community for more solutions or to ask questions. As ever, your comments on what follows are most welcome.
For example, '-PROJECTION' excludes projection information. Next time express yourself clearly. –zaratustra Sep 2 '14 at 8:09 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote accepted I believe you are referring Oracle SQL Developer has one. All rights reserved.
SQL> select sys_context('userenv','session_user') username 2 , sys_context('userenv','current_schema') schema from dual; USERNAME SCHEMA ---------- ---------- MNASH SCOTT SQL> explain plan for 2 select * from dual; Explained. Personally I put a lot of hope on the last test with PARTITIONKEY reference DECLARE v_part char(7):='JUL2012'; BEGIN FOR REC IN (SELECT SGENERAL, count(1) FROM TRANSACTIONS PARTITION FOR (v_part) My cat sat down on my laptop, now the right side of my keyboard types the wrong characters Does f:x mean the same thing as f(x)? http://sonoportal.net/error-cannot/error-cannot-fetch-last-explain-plan-from-plan-table.html [email protected]> alter session set current_schema = martinnash; Session altered.
For finer control on the display output, the following keywords can be added to the above three standard format options to customize their default behavior. Subsequent database versions have increased the functionality of the package. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Use 'BASIC ROWS' to display basic information with the additional number of rows estimated by the optimizer.
This little investigation all started with a report of "explain plan" not working in PL/SQL Developer. The best answer I can come up with is that it doesn't because it just doesn't. If anyone can explain why/how EXPLAIN PLAN FOR doesn't see itself as running in the "CURRENT_SCHEMA"/"SESSION_SCHEMA" then I'd be very interested to know. EXPLAIN PLAN SET STATEMENT_ID='TSH' FOR SELECT * FROM emp e, dept d WHERE e.deptno = d.deptno AND e.ename = 'SMITH'; SET LINESIZE 130 SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE','TSH','BASIC')); Plan hash value: 3625962092
The usage of this syntaxes have sense only in case of big queries (e.g. On digging into it we discovered 3 PLAN_TABLE tables in the database plus a couple of synonyms. SQL> select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------- Error: cannot fetch last explain plan from PLAN_TABLE Looking at where EXPLAIN PLAN FOR has written the rows reveals that the PUBLIC synonym PLAN_TABLE format Controls the level of details for the plan.
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