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Error Cannot Fetch Last Explain Plan From Plan_table 11g


PARTITION INVALID Indicates that the partition set to be accessed is empty. In other words, it accesses all subpartitions of the composite object. Partition Boundaries: The partition boundaries might have been computed by: A previous PARTITION step, in which case the PARTITION_START and PARTITION_STOP column values replicate the values present in the PARTITION step, For statements that use the rule-based approach, this column is null. http://oncarecrm.com/error-cannot/error-cannot-fetch-last-explain-plan-from-plan-table-dbms-xplan.html

Used when the statement contains an ORDER BY clause. It can take one of the following values: n indicates that the start partition has been identified by the SQL compiler, and its partition number is given by n. SQL> select * from table(dbms_xplan.display('mnash.plan_table')); PLAN_TABLE_OUTPUT ---------------------------------------------------------------------------- Plan hash value: 272002086 -------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -------------------------------------------------------------------------- | 0 | It would not be efficient to use parallel query in this case because only a few rows from each table are ultimately accessed. my review here

Error Cannot Fetch Plan For Statement_id Autotrace

The best answer I can come up with is that it doesn't because it just doesn't. 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 The row source tree is the core of the execution plan. For example, consider a table hierarchy consisting of CUSTOMER, ACCOUNT, and TRANSACTION.

On digging into it we discovered 3 PLAN_TABLE tables in the database plus a couple of synonyms. First we explain a SQL statement. I have been reading more and now see that when I run the following statement: SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY(NULL, 'HIL:test1','BASIC')); What would be the difference between the NULL and actually saying Get 1:1 Help Now Advertise Here Enjoyed your answer?

PARTITION ITERATOR Access many partitions (a subset). Oracle Create Plan Table Example 11-14, "EXPLAIN PLAN Output" is an example of the plan table output when using the UTLXPLS.SQL script. UTLXPLP.SQL This script displays the plan table output including parallel execution The small number of rows are joined to larger tables using non-unique indexes. PX RECEIVE Shows the consumer/receiver slave node reading repartitioned data from a send/producer (QC or slave) executing on a PX SEND node.

Posted in Oracle | Tagged 11.2, explain plan, partition, S | 4 Comments Explain Plan andPLAN_TABLE$ Posted on September 15, 2011 by Martin Nash Someone told me something a few weeks The UID element is the relevant component. Privacy Policy Site Map Support Terms of Use ORAganism Menu Skip to content HomeAbout ORAganism EXPLAIN PLAN FORAnomaly Posted on January 8, 2010 by Martin Nash First of all apologies to TABLE ACCESS BY USER ROWID If the table rows are located using user-supplied rowids.

Oracle Create Plan Table

Examples are given for duplicating to the same machine and to different machines Oracle Database Advertise Here 804 members asked questions and received personalized solutions in the past 7 days. http://stackoverflow.com/questions/25613444/how-to-create-explain-plan-table-on-amazon-rds-database See Table 12-3 for more information on values for this column. Error Cannot Fetch Plan For Statement_id Autotrace Example 12-11 Full Partition-Wise Join CREATE TABLE dept_hash PARTITION BY HASH(department_id) PARTITIONS 3 PARALLEL 2 AS SELECT * FROM departments; EXPLAIN PLAN FOR SELECT /*+ PQ_DISTRIBUTE(e NONE NONE) ORDERED */ e.last_name, See "Displaying PLAN_TABLE Output". 12.3.1 Identifying Statements for EXPLAIN PLAN With multiple statements, you can specify a statement identifier and use that to identify your specific execution plan.

But luckily we have extended syntaxes. check over here PARSING IN CURSOR #1 len=39 dep=0 uid=33 select * from table(dbms_xplan.display) Reply Martin Nash says: January 10, 2010 at 10:54 pm Hi Gary, Thanks for pointing me in the right direction. SQL> In the extended output, the "Ord" column displays the execution order of the plan steps. Cost is not determined for table access operations.

Row source is used for negated predicates. The record location is obtained by a user or from a global index. INLIST ITERATOR Iterates over the next operation in the plan for each value in the IN-list predicate. his comment is here Zlib compression disabled.Powered by UBB.threads™ PHP Forum Software 7.4.1p2

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Refer to Table 12-1 for valid values of partition start and stop. The query would drive from the CUSTOMER table. SORT GROUP BY Operation sorting a set of rows into groups for a query with a GROUP BY clause.

TABLE ACCESS BY ROWID RANGE Retrieval of rows from a table based on a rowid range.

The options column contain information supplied by a user-defined domain index cost function, if any. FILTER Operation accepting a set of rows, eliminates some of them, and returns the rest. FILTER_PREDICATES VARCHAR2(4000) Predicates used to filter rows before producing them. Indexed values are scanned in descending order.

Used when the statement contains an ORDER BY clause. My best regards Cristiano Reply Martin Nash says: May 18, 2010 at 7:25 pm Hi Cristiano, Thanks for the useful suggestion. Is there an option to tick somewhere? weblink This partition is known at compile time, so the database does not need to show it in the plan.

ROUND-ROBIN Randomly maps rows to query servers. The statistics in V$SQL_PLAN_STATISTICS are available for cursors that have been compiled with the STATISTICS_LEVEL initialization parameter set to ALL. For hash partitions, the row source name is PARTITION HASH. Wth the usual disclaimer of: I might have missed something…¬†EXPLAIN PLAN is not affected by the "ALTER SESSION SET CURRENT_SCHEMA" command.

After a quick test I confirmed that things were definitely not working as expected via SQL*Plus as shown below: Oracle9i Enterprise Edition Release - 64bit Production With the Partitioning, Real The results also help you to understand the optimizer decisions, such as why the optimizer chose a nested loops join instead of a hash join, and lets you understand the performance The PARTITION_START and PARTITION_STOP is set to KEY, which means that Oracle Database determines the number of subpartitions at run time. 12.9.3 Examples of Partial Partition-Wise Joins In the following example, So "explain plan" should work right out of the box and then you can read the results from the table: explain plan for select * from dual; select * from table(dbms_xplan.display);

CUBE SCAN Uses inner joins for all cube access. DISPLAY_PLAN - Introduced in Oracle 11g Release 2, this function displays the contents of the plan table in a variety of formats.