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SQL> alter session set "_px_trace"="compilation","execution","messaging"2 / 1. 会话已更改。 这个参数的设置含义是在SQL编译、执行、并行执行消息传递活动发生时进行跟踪。设置好参数后,执行查询操作: SQL> select count(*) from xuji_test; COUNT(*)61059 1. 2. SQL执行结束后,在udump下找到这个TRACE...
The books are listed alphabetically, by their short titles, usually without the initial "Oracle," "Oracle8i," "Oracle9i," and so on. They are alphabetized according to their usual short names, so the "SQL Reference" is under S and the "OCI Guide" is under O. You can use the list of...
理论上我们可以并行地实施表的在线重定义;若已经同时指定了原表和临时表的并发度,那么也请确保实施操作的本会话(session)已经启用了会话级别的并行执行, 这样Oracle服务进程会在实施重定义的过程中尽可能地使用并行执行( parallel execution )。 可以采用以下ALTER SESSION命令启用并行的DML和查询: alter session force ...
Guides Related to All Products Oracle E-Business Suite User's Guide This guide explains how to navigate, enter and query data, and run concurrent requests using the user interface (UI) of Oracle E-Business Suite. It includes information on setting preferences and customizing the UI. In ...
从Oracle 8i开始,可以使用基于函数的索引来提高查询性能, 使用基于函数的索引,需要几个条件: 1, 用户需要有create index或者create any index权限 2, 用户需要有query rewrite或者global query rewirte权限 3, 设置系统参数 query_rewrite_enabled=TRUE 和query_rewrite_integrity=enforced ...
10. SQL – MySQL for Data Analytics and Business Intelligence (Udemy) 11. Free SQL Courses Online (edX) 12. SQL for Data Analysis: Weekender Crash Course for Beginners (Udemy) 13. The Complete Oracle SQL Bootcamp (2021) (Udemy) 14. SQL Classes & Training (LinkedIn Learning) ...
Updated Syllabus and Course Material for everyone to get Complete Knowledge on Oracle PLSQL. Hands-on Classes for PLSQL training Offered by Oracle Certified Experts. Take this Course from your home and Become PLSQL Developer in Just a Month from this Online Live Classes. Register for 1 hour ...
Db<>Fiddle supports more SQL compilers than the other SQL online compilers. It supports SQL Server, SQLite, Firebird, MariaDB, MySQL, PostgreSQL, DB2, and Oracle. Besides, you can query Sample databases using some compilers such as SQL Server 2019. ...
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491) at weblogic.jdbc.wrapper.PreparedStatement.executeQuery(PreparedStatement.java:135) at glog.util.jdbc.noserver.SqlQuery.executeQuery(SqlQuery.java:164) ...