Database Administrator

Problem 1: the shared disk allocated on node 1 can only be seen on node 2. Solution: Disable Node 1. This step does not verify whether it is required ). You can re-allocate Node 2 once and open Node 1. Problem 2: Installing Oracle changes the size

Create an Oracle trigger for auto-increment of sequence values in a tableHelloblockWriting) SQL> conn scott/oracle Use the scott user. Do not use the sys account. 1Create a test tableTb1: SQL> create table tb1(Id int primary key, Name varchar2 (20)

I. Objectives Create a cluster with two nodes Use HeartBeat to check the cluster status, When one node in the cluster fails, start the mysqld service on the other node. The two nodes share the NFS database. You can use 3rd nodes to provide the nfs

1. archive can only be changed under mount. SQL> shutdown immediateThe database has been closed.The database has been detached.The ORACLE routine has been disabled.SQL> startup mount;The ORACLE routine has been started. Total System Global Area 77838

An error occurred while backing up mysql, but the website is running normally Localhost :~ #/Usr/local/mysql/bin/mysqldump -- lock-tables = FALSE-uroot-p webadb_com>/root/webabc. SQL Enter password: Mysqldump: Got error: 2002: Can't connect to local

A ssis Package was created two days ago to loop through Excel and then import it to the database. It works normally in the development environment, but after being deployed to the SQLAgent, it is found that the Job has failed. Open JobHistory to

User management is an important part of the system. Every user logged on to the system has a user account, and a password is usually stored in a secure system, A valid user must have a password ). If the password is correct, the user can log on to

In this example, a 5 GB 8-mm tape drive is used, and its device file is/dev/rmt0. I. Backup Backup can be implemented through the command line or SMIT menu. 1. Command Line backup The AIX commands backup and restore are used for backup and recovery.

1. Change the password when the ROOT user password of the MYSQL database is known: 1. In the SHELL environment, use the mysqladmin command to set: mysqladmin-u root-p password "new password" and press enter to enter the old password. 2. In the

1. Mysqlbin-logLogs 1.EnableMysqlbin-logLogs # Vi/etc/my. cnf [Client] # Password = your_password Port = 3306 Socket =/tmp/mysql. sock Default-character-set-utf8 ....... [Mysqld] Port = 3306 Socket =/var/lib/mysql. sock Log-slow-queries =

Data Block-"area-" segment-"tablespace-" Database I. tablespace 1. tablespaces are divided into system tablespaces and non-system tablespaces. 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131229/210T53238-0.jpg "alt =" 20120708

1.3 zipmap Structure If the redisObject type member value is of the REDIS_HASH type, when the entry of the hash is smaller than the configuration value: if the length of the hash-max-zipmap-entries or value string is less than hash-max-zipmap-value,

--- SQL Server statement: SELECT COUNT (1 ), remark FROM (SELECT Remark = case when Remark LIKE '% check tkt time % 'then' there is a problem WITH the retention TIME 'when Remark LIKE' % WITH "AV" AGAIN % 'then' there is no space 'When Remark LIKE

Add and modify data files in oracle ---------- Add a data file --------- Altertablespacetablespace_nameadddatafile '+ ASMDISK1/mydbfile. dbf' size10240M; ------- Manually change the data file size ------ Alterdatabasedatafile '+ ASMDISK1/mydbfile.

I. Optimistic lock complex transaction control Optimistic lock: Based on the Data version. Add a version ID for the data. In the database table-based version solution, when you add a version field to the database table to read the data, read the

The following describes how to install apache under aix. Method 1: Binary Installation To http://aixpdslib.seas.ucla.edu/aixpdslib.html Download the compile-enabled apacheand download the httpd.2.0.45.tar. Z package, Upload it to the AIX root

650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131229/203I52058-0.gif "alt =" y_0040.gif "/> some things are not as much as we thought, but we are scaring ourselves. Especially in programming, it may be that if you ignore a very

Tables/databases/processlist/userShowtables or showtablesfromdatabase_name;Explanation: displays the names of all tables in the current database.Showdatabases;Explanation: displays the names of all databases in mysql.Showprocesslist;Explanation:

Navicat Premium is a management tool that supports multiple databases ): Http://download.navicat.com/download/navicat110_premium_en_x86.exe Http://download.navicat.com/download/navicat110_premium_en_x64.exe 650) this. width = 650; "src =" http://www.

The error "./ib_logfile0 is of different" is returned when you use xtrabackup to completely back up the mysql database. The specific log information is as follows: 650) this. width = 650; "border =" 0 "src =" http://www.bkjia.com/uploads/allimg/13122