人工采集 快照默认是自动采集的,但您也可以按需要采集它们。所有的 AWR 功能都在程序包DBMS_WORKLOAD_REPOSITORY 中实施。要采集一次快照,只需发出下面的命令: execute dbms_workload_repository.create_snapshot 它立即采集一次快照,快照被记录在表 WRM$_SNAPSHOT 中。采集的量度是针对
DBMS_SQLTUNE.LOAD_SQLSET(:ss_name, baseline_ref_cursor); DBMS_OUTPUT.PUT_LINE('SQL tuning set'||:ss_name||'created.');END;/--display details of the SQL tuning setcol PLAN_HASH_VALUE clearselectSQLSET_NAME,SQLSET_OWNER,SQL_ID,PLAN_HASH_VALUEfromdba_sqlset_statementswheresqlset_name=...
plans := dbms_spm.load_plans_from_sqlset(sqlset_name => :ss_name, sqlset_owner => USER, fixed => 'YES', enabled => 'YES'); commit; DBMS_OUTPUT.PUT_LINE('Plans Loaded: '||plans); -- find handle and plan_name for sql_plan_baseline just created SELECT sql_handle, plan_name ...
EXPLAIN_INSTANCE EXPLAIN_STATEMENT EXPLAIN_ARGUMENT EXPLAIN_OBJECT EXPLAIN_OPERATOR EXPLAIN_PREDICATE EXPLAIN_STREAM ADVISE_INSTANCE ADVISE_INDEX ADVISE_WORKLOAD ADVISE_MQT ADVISE_PARTITION ADVISE_TABLE The following are the DB2 version 9.x execution plan tables: EXPLAIN_DIAGNOSTIC EXPLAIN_DIAGNOSTIC_DATA EX...
SQL>SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('PLAN_TABLE')); 或者: SQL>select * from table(dbms_xplan.display); PLAN_TABLE_OUTPUT --- Plan hash value: 3458767806 --- | Id| Operation| Name | Rows| Bytes | Cost (%CPU)| Time| ---...
ADVISE_INSTANCE ADVISE_INDEX ADVISE_WORKLOAD ADVISE_MQT ADVISE_PARTITION ADVISE_TABLE Internally DB Solo uses the commandEXPLAIN ALL SET QUERYNO = ? FOR <sql statement>to retrieve the plan from DB2. SQL Server Explain Plan To get the execution plan from SQL Server, the query tool uses theSET...
>>Note the drop-down control added to the Explain Plan button in the worksheet toolbar. This is a total disaster. Please make an option to disable this “feature” or just disable it. This “feature” blocks using dbms_xplan. I typically use gather_plan_statistics hint and select * from...
Define inheritance, polymorphism and how they are used in python? What is the difference between a class and an instance of a class? Give an example. How to do polymorphism? Explain the concept of encapsulation. Provide an example to illustrate your points and also provide the pseudocode. T...
OBJECT_INSTANCE NUMERIC Number corresponding to the ordinal position of the object as it appears in the original statement. The numbering proceeds from left to right, outer to inner for the original statement text. View expansion results in unpredictable numbers. OBJECT_TYPE VARCHAR2(30) Modifier...
insert into plan_table (statement_id, timestamp, operation, options,object_node, object_owner, object_name, object_instance, object_type,search_columns, id, parent_id, position, other,optimizer, cost, cardinality, bytes, other_tag, partition_start, partition_stop, partition_id, distribution, cp...