这是由于“适应性”计划。Oracle向您显示了所有候选项-在这种情况下,它可以使用哈希连接或嵌套循环进行连接。您看到的输出不会显示哪个步骤是自适应的(可选)和哪个步骤是强制性的。据我所知,您正在使用DBeaver,它不知道Oracle's执行计划的“自适应”功能,因此没有任何指示。您可以使用本机方式显示执行计划:SELECT ...
Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.2.0.1 [Release 12.1 to 12.2]: ORA-3171 Recovery Was Terminate During Query Execution
Query execution was interrupted, maximum statement execution time exceeded Royal_Jain 5 - Atom 06-05-202312:56 AM Hi, I am transferring 850 tables from a MySQL database to a database in Oracle SQL developer. I have created a workflow using In-Database tools and ...
Simple plan view If a database driver supports the visualization of the execution plan, you can see the execution plan of the current query (under cursor) by pressingCtrl+Shift+Eor clickingExplain execution planon the context menu or in the SQL Editor toolbar: (Note: toolbar is customizable....
Since a materialized view is an object in the database then in many ways, a materialized view behaves like an index because: • the purpose of the materialized view is to increase query execution performance • the existence of a materialized view is transparent to SQL applications, so a ...
If the alert is Query execution timed out alert then From the Applications Manager GUI, Go to respectiveOracle Monitor's details page->Monitor Actions->Edit Monitor-> Increase the seconds mentioned in "Query Execution Timeout" field. If the alert is Socket read timed out alert then ...
Oracle Query Optimizer Overview The Optimizer is one of the most fascinating components of the Oracle Database, since it is essential to the processing of every SQL statement. The Optimizer determines the most efficient execution plan for each SQL statement based on the structure of the query, th...
If the size exceeds 2GB, then you may need to manually trim the database in order for the built-in script to work properly. Oracle has information about this common MySQL error available here: ODBC error "Query execution was interrupted, maximum statement execution tim...
10.8.1 Optimizing Queries with EXPLAIN 10.8.2 EXPLAIN Output Format 10.8.3 Extended EXPLAIN Output Format 10.8.4 Obtaining Execution Plan Information for a Named Connection 10.8.5 Estimating Query Performance Depending on the details of your tables, columns, indexes, and the conditions in yourWHERE...
really, i read the description of DBI module and it was mentioned that one process can block the work of other ones if we use the same connection. Subject Written By Posted query execution becomes slow after the first execution of the program ...