oracle数据库实例的相关内容

文章 2022-02-15 来自：开发者社区

Oracle 数据库灾难性环境下恢复实例

一、版本和数据库文件信息 1.Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production 2.PL/SQL Release 11.2.0.3.0 - Production 3.CORE 11.2.0.3.0 Production 4.TNS for Linux: Version 11.2.0...

文章 2022-02-15 来自：开发者社区

Oracle数据库备份恢复的概念：错误类型、实例恢复方法等

1.明确Oracle数据库中可能发生的错误类型; 2.描述实例恢复的方法; 3.明确checkpoints,redo log files和archive log files的重要性; 4.配置快速闪回区; 5.配置归档模式; Part of Your Job DBA的职责就是要保证数据库是可使用的而且是高效的; 1.避免数据库发生常规错误...

文章 2021-12-15 来自：开发者社区

Oracle 数据库SQL语句查询oracle数据库表主键，查看oracle指定表的表结构实例演示

-- 查看表结构 select * from user_tab_columns where table_name = '表名';-- 查看表主键 select a.constraint_name, a.column_name from user_cons_columns a, user_constraints b where a.constraint_name = ...

文章 2021-12-14 来自：开发者社区

SQL语句查询出的数据进行字符串拼接，oracle批量删除数据库用户实例演示

           通过 dba_users 表可以查询出所有的数据库用户，我下面筛选了所有 HR 开头的数据库用户，要把他们都删掉。select username from dba_users where username like 'HR%' order by created asc;|| 符号可以连接字符串还有查出来的数据，删.....

文章 2018-12-20 来自：开发者社区

详细说明手工创建oracle数据库实例

手工建库比起使用DBCA建库来说，是比较麻烦的，但是如果我们学好了手工建库的话，就可以使我们更好地理解Oracle数据库的体系结构。手工建库须要经过几个步骤，每一个步骤都非常关键。它包括：１、创建必要的相关目录２、创建初始化参数文件３、设置环境变量Oracle_sid４、创建实例５、创建口令文件６、启动数据库到nomount(实例)状态７、执行建库脚本８、执行catalog脚步本....

文章 2017-05-16 来自：开发者社区

Oracle 数据库实例启动关闭过程

Oracle 数据库实例启动关闭过程 --================================ -->Oracle 数据库实例启动关闭过程 --================================ /* Oracle数据库实例的启动，严格来说应该是实例的启动，数据库仅仅是在实例启动后进行装...

文章 2016-07-21 来自：开发者社区

ORACLE多版本数据库实例共存启动关闭时ORA-01804&SP2-0152

今天，由于特殊原因，需要重启数据库，理论上应该是很简单的事；事实情况是，一台linux服务器上，有4个Oracle实例，3个实例是11.2.0.4的，1个实例是10.2.0.5的。重启时，11g的三个实例很简单，但是10g的实例重启时，发现sys无法登陆，报错如下：设置10g的环境变量 [oracle@linux ~]$ ps -ef|g...

文章 2012-06-10 来自：开发者社区

【原】Oracle 数据库实例启动过程

Oracle数据库实例的启动，严格来说应该是实例的启动，数据库仅仅是在实例启动后进行装载。Oracle数据启动的过程被划分为，几个不同的步骤，在不同的启动过程中，我们可以对其实现不同的操作，系统修复等等工作，因此了解Oracle数据启动、关闭是非常有必要的。下面详细了Oracle Database数据库启动及关闭的过程。数据库实例的启动启动过程：nomount ---> mount -....

文章 2010-04-29 来自：开发者社区

Oracle 数据库实例启动关闭过程

--================================ -->Oracle 数据库实例启动关闭过程 --================================ /* Oracle数据库实例的启动，严格来说应该是实例的启动，数据库仅仅是在实例启动后进行装载。Oracle数据启动的过程被划分为几个不同的步骤，在不同的启动过程中，我们...

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数据库审计

满足等保2.0二级和三级 “安全审计”合规要求的同时，智能解析数据库通信流量，细粒度审计数据库访问行为，通过对数据库全量行为的审计溯源、危险攻击的实时告警、风险语句的智能预警，提供数据库资产最安全的监控保障。

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