问题背景 适用情况: 操作系统: redhat 6.5 数据库: oracle 11g r2 问题描述: failover后原主库无法恢复和启动或者丢失主备关系 优点 实施前准备工作 1.测试dumplicate 2.测试环境数据库利用dumplicate重建stanby数据库 实施步骤 备份新主库 ...
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数据库 时间:
2017-11-17 18:35:05
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248
MySQL:创建、修改和删除表 其实对很多人来说对于SQL语句已经忘了很多,或者说是不懂很多,因为有数据库图形操作软件,方便了大家,但是我们不能忘记最根本的东西,特别是一些细节上的东西,可能你用惯了Hibernate,不用写SQL语句,但是不是任何项目都要用到大框架的,如果不用,那你是不是就不会操作 ...
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数据库 时间:
2017-11-16 22:10:23
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239
leetcode 39. Combination Sum Medium descrition Given a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique comb ...
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其他好文 时间:
2017-11-16 20:51:54
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107
Observe the structure of the table employees: The table contains 8475 records. One of the employees wants to know the names of all employees of the co ...
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其他好文 时间:
2017-11-16 15:25:26
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179
Which three tasks can be performed using a duplicate database? (Choose three.)A. Testing the backup and recovery proceduresB. Testing the upgrade of a ...
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其他好文 时间:
2017-11-16 14:21:43
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120
To clean up old records that are in a Flashback Data Archive and are past the retention period, what must the DBA do?A. TRUNCATE the archive table.B. ...
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其他好文 时间:
2017-11-13 19:51:21
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281
Users notify you that their application is failing every time they try to add new records. Because ofpoor application design, the actual ORA error mes ...
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其他好文 时间:
2017-11-13 17:00:54
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189
[20171113]修改表结构删除列相关问题.txt--//维护表结构删除字段一般都是先ALTER TABLE <table_name> SET UNUSED (<column_name>);--//然后等空闲时候删除列.ALTER TABLE <table_name> DROP UNUSED CO ...
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其他好文 时间:
2017-11-13 13:46:39
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179
Given a set of distinct integers, nums, return all possible subsets (the power set). Note: The solution set must not contain duplicate subsets. For ex ...
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其他好文 时间:
2017-11-11 11:21:48
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152
What command would you use to ensure that backup records in the control file are pointing to actual physical files on the backup media?A. crosscheckB. ...
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其他好文 时间:
2017-11-10 18:28:59
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132