Figure 3: EXPLAIN PLAN output using the BASIC output 3 THE ORACLE OPTIMIZER EXPLAIN THE EXPLAIN PLAN The arguments for DBMS_XPLAN.DISPLAY are: plan table name (default 'PLAN_TABLE') statement_id (default null means the last statement inserted into the plan table) format, ...
Explain plan is a feature that allows you to see a visual representation of the execution plan of a query in a tree or table format. When you execute your queries in the query window and the execution plan is available, you can view the plan under the 'Plan' tab. This feature is usef...
Briefly explain the purpose of the loop, or iteration, structure. Then provide an original example algorithm with the loop structure. Why is a bitmap index used in data warehousing? How does cloud storage work? Do you always need to get the largest amount of RAM possible? Why or why not...
Some examples of the use of DBMS_XPLAN to display PLAN_TABLE output are: SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY()); SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY('MY_PLAN_TABLE', 'st1','TYPICAL')); See Also: Oracle Database PL/SQL Packages and Types Reference...
Value of Knowledge in IS: In an Information system, the components Data, Information, and knowledge are connected with each other. Data represents... Learn more about this topic: What Is an Information System? from Chapter 1/ Lesson 1 ...
CARDINALITY- Estimated number of rows produced by this step OPTIMIZER- RULE or CHOOSE ACCESS_PREDICATES- Predicate to locate rows in the access structure. FILTER_PREDICATES- Predicate that will filter rows before returning them from this step ...
• Object Databases:These days OOP concepts have also been introduced indatabasesystems to develop a newDBMSnamed object databases. These databases store the data directly in the form of objects. However, these databases are not as popular as the traditional RDBMS. ...
SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY()); Auto DOP The note structure displaying why Auto DOP did not work (with the exception noted above on IO Calibrate) is like this: Automatic degree of parallelism is disabled: <reason> These are the ...
Figure 3: EXPLAIN PLAN output using the BASIC output 3 THE ORACLE OPTIMIZER EXPLAIN THE EXPLAIN PLAN The arguments for DBMS_XPLAN.DISPLAY are: plan table name (default 'PLAN_TABLE') statement_id (default null means the last statement inserted into the plan table) format, ...
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