For working with tutorial of oracle Introduaction to oracle/sql you need to work on the tables which is locked in oracle. for Unlocking these tables you have to follow these steps 1. Login in sqlplus or sqlplus or isqlplus as a user “system” with res…

初次使用Grails时,使用其内置数据库,一直不会出错,但迁移到外部数据库时会出错Could not determine Hibernate dialect for database name [Oracle]! 注意在conf文件下的dataSource添加上dialect        如下(使用Oracle数据库) dataSource { pooled = true driverClassName = "oracle.jdbc.driver.OracleDriver" user…

1.如果在签名时android studio报"Master password is required to unlock the password database.The password database will be unlocked during this session for all subsystems." 那么直接点击弹窗右下角的“Reset”按钮,再输入密码和确认密码就好了. 2.选择版本类型时signtrue versions无法勾选,一般不会出现这种情况,我是…

Note 805586.1   Troubleshooting Session Administration (Doc ID 805586.1)Note 822527.1   How To Find Where The Memory Is Growing For A Process (Doc ID 822527.1)Note 273646.1   How to diagnose the high CPU utilization of ORACLE.EXE in Windows environme…

前言 参考oracle官方文档:PL/SQL Language Reference 11g Release 2  -  5 PL/SQL Collections and Records 可以去看下文档中写的 - 各个集合的适用场景:Appropriate Uses for Associative Arrays . Appropriate Uses for Varrays .Appropriate Uses for Nested Tables . (自己也没怎么用过,所以不太知道怎么抉择) 一.A…

一.oracle触发器基本语法 CREATE [OR REPLACE] TRIGGER trigger_name {BEFORE | AFTER } {INSERT | DELETE | UPDATE [OF column [, column …]]} [OR {INSERT | DELETE | UPDATE [OF column [, column …]]}...] ON [schema.]table_name | [schema.]view_name [REFERENCING {OLD […

主表: 从表: 结果集: 查询从表中年龄最大的一行数据,如果存在年龄相等的则为了保证唯一取id(主键)最大的一行. 一.利用sql子查询嵌套 -- -------------------------------- -- 利用sql子查询嵌套 -- -------------------------------- -- step 1. 子查询:找到每组最大的子类年龄 select parent_id,max(child_age) from child group by parent_id; --…

http://www.idevelopment.info/data/Oracle/DBA_tips/Database_Administration/DBA_26.shtml DBA Tips Archive for Oracle        Oracle Created (Default) Database Users by Jeff Hunter, Sr. Database Administrator Overview During database creation, Oracle cre…

P6 EPPM Manual Installation Guide (Oracle Database) P6 EPPM Manual Installation Guide (Oracle Database) Contents Oracle Database Manual Configuration Overview ,,★★5 Oracle Database Installation ,,★★6 Creating the Database Structure for Oracle and Loa…

Oracle Standby Database 实现方案  From: http://wanow.blog.hexun.com/4672755_d.html 字号:大 中 小 版本:V20060328.01.01 Standby Database的工作原理 1. Oracle 与 High Availability, Disaster Recovery 及 Data Duplicate 相关功能的产品概述 Oracle 的 High Availability 功能,Oracle 是从下面几个方面…