Link: http://www.essentialsql.com/what-is-a-database-trigger/ Copy... What is a Database Trigger? A database trigger is special stored procedure that is run when specific actions occur within a database. Most triggers are defined to run when changes…
Oracle12c中可插拔数据库(PDBs)上的多宿主数据库触发器 随着多宿主选项的引入,数据库事件触发器可以在CDB和PDB范围内创建. 1. 触发器范围 为了在CDB中创建数据库事件触发器,需要以通用用户登录到数据库,且该用户需要被授予ADMINISTER DATABASETRIGGER系统权限. CONN sys@cdb1 AS SYSDBA CREATE OR REPLACE TRIGGER cdb1_aftr_strtup_trg AFTER STARTUP ON DATABASE…
Oracle Database 系统权限和对象权限 Oracle中的系统权限和对象权限 DCL 数据控制语言 -- 查看对象的权限 grant / revoke 查看登录用户 Show user 查看管理员用户表dba_users结构 desc dba_users 查看用户名 select username from dba_users; 启用用户 Alter user username account unlock; 禁用用户 Alter user username account lock;…
实验仍未成功,步骤仅供参考. 1:首先检查一下在Linux操作系统下Oracle数据库是否能启动,是否能连通等 [oracle@localhost ~]$ sqlplus SQL*Plus: Release 11.2.0.1.0 Production on Tue Mar 25 02:17:32 2014 Copyright (c) 1982, 2009, Oracle. All rights reserved. Enter user-name: sys as sysdba Enter pas…