Database Administrator

NLS_LANG format: NLS_LANG = LANGUAGE_TERRITORY.Client CHARACTERSET 1. Composition of the NLS_LANG Parameter The NLS_LANG parameter consists of the following parts: NLS_LANG = _. The meanings of NLS_LANG are as follows: LANGUAGE: Oracle

Declaration: SYBASE is in the version 12.5.0.3 for linux. Operating System: Linux localhost. localdomain 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686 i686 i386 GNU/Linux Download Sybase 12.5.0.3 for linux. Because it is only used as a

Steps for building a physical standby database on the same machine Lab environment: LInux EnvironmentORacle 11.2.0.1 Master Database: orcl Slave Database: stby 1 CheckSupervisionStart listening? 2. Configure the initialization parameter file for the

Generally, commands are executed as Oracle. 1. Verify that the system dependency package required by Oracle is complete. Rpm-qa binutils compat-db control-center gcc-c ++ glibc-common libstdc ++-devel make libaio libXp 2. Verify System

Error message: Oracle@www.bkjia.com ~ $ Emctl start dbconsole TZ set to PRC Enter the Configuration file./u01/app/oracle/product/10.2/db_1/Solaris/j2ee/OC4J_DBConsole_localhost.localdomain_orcl not found. Solution: Method 1 (recommended): Use dbca

MySQL provides rich operation interfaces for other programming languages. Generally, MySQL can be well managed as long as SQL statements are supported. Shell has limited support for MySQL, and two common direct operations are used. 1) execute the

We all know thatOracleEach entrySQLThe statement must be parsed before execution, which is divided into soft parsing and hard parsing. InOracleThere are two typesSQLStatement.DDLStatement(Data Definition Language)They are never shared, that is, each

The 10046 event of Oracle can track the SQL statements executed by the application and obtain the number of resolutions, executions, CPU usage time, and other information. This is very useful for us to analyze and locate database performance issues.

Oracle 9i changed the character set AL32UTF8 to ZHS16GBKSQL> conn/as sysdbaSQL> shutdown immediate;SQL> startup mountSQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES = 0;SQL> ALTER SYSTEM SET AQ_TM_PROCESSES =

// Rownum is a pseudo column. It is the number automatically assigned to each row in the query result by the Oracle system. The first row is 1, the second row is 2, and so on ....// An oracle page, which must contain at least three layers (unless

1. Compile and install the first MySQL 5.1.33Cd/opt/Usr/sbin/groupadd mysql/Usr/sbin/useradd-g mysql-s/bin/nologin-d/usr/local/mysqlTar-zxvf mysql-5.1.33.tar.gzCd mysql-5.1.33/. /Configure -- prefix =/usr/local/mysql/-- enable-validator --

Objective: To install Oracle-client (v11) under "/opt/oracle /" Prepare the following three installation packages in a directory, such as:/root/software/oracle[Root @ localhost oracle] # pwd /Root/software/oracle [Root @ localhost oracle] #

Import java. io. BufferedReader;Import java. io. File;Import java. io. FileInputStream;Import java. io. InputStream;Import java. io. InputStreamReader;Import java. io. OutputStream;Import java. io. Reader;Import java. io. Writer;Import java. SQL.

First, download an Oracle 11 GB package from the oracle official website (it indicates that you try to package all the development packages when installing CentOS 5.5, so that you will install fewer packages when detecting the installation package,

Oracle 11g cannot configure listening. This is rare, but I hope it can help my friends who have encountered this problem. Problem: When Using Database Configuration Assistant to create an Oracle 11g Database, step 4 is to create Enterpeise Manager.

1. you can use $ ORACLE_HOME/bin/netca to configure the listener on the Oracle server. If the listener Configuration does not use the default listener name (listener), but changes it to another name, the startup method is [Oracle@www.bkjia.com

Install mysql 5.5.13 in rhel4// Author: guojin. chenI. rpm Installation1. Prepare the package:MySQL-server-5.5.13-1.rhel4.i386.rpmMySQL-client-5.5.13-1.rhel4.i386.rpm2. check whether there are any old mysql versions.Rpm-q mysqlIf yes, it will be

I have been creating a database manually using bare devices in Oracle 10 Gb. Today I try to create a database manually using bare devices in oracle 9i, but after some trouble, finally, the solution is solved. The detailed record is as follows. I

When installing RAC, the system will prompt you to enter the dedicated node (host), public node (public), virtual node (vip)-These nodes are all set in the system etc file. the public node is used for external or internal personnel to view data.

Tested the cost calculation of full table scan for Oracle11gR2 in non-workload mode. Now we can test the cost calculation of full table scan for Oracle11gR2 in workload mode. First, we will increase the table blocks to 10003. SQL> select owner,