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高可用的并行MySQL数据同步及分布式
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...
分类:数据库   时间:2015-10-03 21:56:44    阅读次数:374
ocp-70
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...
分类:其他好文   时间:2015-10-03 07:20:40    阅读次数:203
ocp-75
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...
分类:其他好文   时间:2015-10-03 06:10:51    阅读次数:162
ocp-34
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...
分类:其他好文   时间:2015-10-02 17:31:07    阅读次数:179
ocp-32
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...
分类:其他好文   时间:2015-10-02 17:30:17    阅读次数:277
ocp-36
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...
分类:其他好文   时间:2015-10-02 17:29:17    阅读次数:171
ocp-33
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...
分类:其他好文   时间:2015-10-02 17:27:59    阅读次数:251
Linux 命令 - mv: 移动或重命名文件
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...
分类:移动开发   时间:2015-10-01 15:09:30    阅读次数:205
MySQL备份工具mydumper备份
#!/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
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
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