首先聊聊MySQL的数据分布式,目前最为常用的就是Replication(复制)技术。基于此技术外延开来有很多中架构,分类归结为如下:1、树状结构(Master,Backup-Master,Slaves)这种结构是目前Web系统用的最为通用的一种。整个系统有1个写入/更新点,即Master;Mast...
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数据库 时间:
2015-10-03 21:56:44
阅读次数:
374
QUESTION NO: 70
ASM supports all but which of the following file types? (Choose all that apply.)
A. Database files
B. Spfiles
C. Redo-log files
D. Archived log files
E. RMAN backup sets
F. Pass...
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其他好文 时间:
2015-10-03 07:20:40
阅读次数:
203
QUESTION NO: 75
You are peer reviewing a fellow DBA‘s backup plan for his NOARCHIVELOG mode database, as shown
here:
1. Put the tablespaces in backup mode.
2. Back up the datafiles for all tablesp...
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其他好文 时间:
2015-10-03 06:10:51
阅读次数:
162
QUESTION NO: 34
You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the
USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 M...
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其他好文 时间:
2015-10-02 17:31:07
阅读次数:
179
QUESTION NO: 32
You are managing an Oracle Database 11g database. You want to take the backup of MULT_DATA, a big
file tablespace of size 100 TB on tape drive, but you have tapedrives of only 10 GB e...
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其他好文 时间:
2015-10-02 17:30:17
阅读次数:
277
QUESTION NO: 36
You issued the following command to mount the DATA disk group in restricted mode:
ALTER DISKGROUP data MOUNT RESTRICT;What is the implication of this command?
A. The client RDBMS ins...
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其他好文 时间:
2015-10-02 17:29:17
阅读次数:
171
QUESTION NO: 33?
You performed the RMAN database backup with the KEEP option. Which two statements are true
regarding this backup? (Choose two.)
A. The backup contains data files, the server parame...
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其他好文 时间:
2015-10-02 17:27:59
阅读次数:
251
命令格式cp [OPTION]... [-T] SOURCE DEST cp [OPTION]... SOURCE... DIRECTORY cp [OPTION]... -t DIRECTORY SOURCE...命令参数--backup[=CONTROL]为每个已存在的目...
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移动开发 时间:
2015-10-01 15:09:30
阅读次数:
205
#!/usr/bin/phthonimport osimport timeimport commandsimport shutilimport threadingfrom os.path import join, getsizeimport MySQLdb as mydb# 备份目录baseDir = "/data2/backup/backup_data/"# ns 或 wx; 备份后是否要压缩...
分类:
数据库 时间:
2015-10-01 07:00:25
阅读次数:
212
利用Piranha+LVS方案实现WEB负载均衡背景:最近公司上了一个项目,项目主要是实现手机终端访问WEB页面,但是用户量较大,需要实现负载均衡,经过方案选型,最终选择了用Piranha+LVS+nginx来实现。环境:操作系统Centos6.6_X64WEBnginx结构:LVS-ACTIVE:10.6.1.210LVS-BACKUP:10..
分类:
Web程序 时间:
2015-09-29 14:57:43
阅读次数:
386