EXPLAIN PLAN与DBMS_PROFILER解析
原文英文,约500词,阅读约需2分钟。发表于: 。EXPLAIN PLAN (Before Query Execution) EXPLAIN PLAN is used before the query is executed to provide an execution plan for how Oracle intends to run the SQL statement. It doesn't actually run the...
EXPLAIN PLAN用于在查询执行前提供SQL执行计划,帮助优化查询;DBMS_PROFILER用于在PL/SQL代码执行后收集性能数据,识别瓶颈,从而优化代码。