Oracle

Once the installation is complete, the settings for the environment variables have been tossing for most of the day, and later only to know to restart, in order to make it effective.Because the operating system is Chinese,/home/oracle/app/..../bin

1. BackgroundIn the Leting project, engineering colleagues put forward the need for docking vehicle GPS reporting points, can be real-time to determine whether the point falls in the Leting administrative region. If not, alarm it.Processing ideas

I. Import and export the remote Oracle databaseAn example of its syntax is as follows:imp/exp [username[/password[@service] ], where service is the name of the services instance, about how to createService instance name or database SID is logged in

Transactions are used to guarantee data consistency, which consists of a set of related DML statements that either all succeed or fail altogether.Transactions and LocksWhen performing transactional operations (DML statements), Oracle locks on the

Start Client tool: Sqlplus/nologUsing SYSDBA link: conn/as sysdba;select* fromdba_users; --查看数据库里面所有用户，前提是你是有dba权限的帐号，如sys,systemselect* fromall_users;  --查看你能管理的所有用户！select* fromuser_users; --查看当前用户信息 ！selectinstance_name fromv$instance;  --查询实例名In

Refer to Article http://www.cnblogs.com/wangsaiming/p/3688141.htmlMicrosoft Windows XP [version 5.1.2600](C) Copyright 1985-2001 Microsoft Corp.C:\Documents and Settings\administrator>sqlplus/nologSql*plus:release 9.2.0.1.0-production on Monday May 4

oracle--startThe startup process for an Oracle database consists of 3 steps: launch instance, load database, open databaseThe step-up process enables different maintenance operations on the database, which correspond to our different needs.Startup

Although the database is placed in the Linux virtual machine, but all to do every normal landing and exit, the following is the process:To start a DB instance stepFirst step: Start monitoring#su-oracle//Switch to Oracle user $lsnrctl start//turn on

Modifying the character set of an Oracle database (UTF8→ZHS16GBK)1. C:\users\administrator>sqlplus/nolog2. Log in as SysdbaSql> Conn Sys/root as Sysdba3. Hitting the database with MountSql>startup Mount4. Set sessionSql>alter SYSTEM ENABLE

Written before the installation.There may be a lot of novices who are very afraid of installing large software because some of the errors in the installation process make them headache. Below I will write a tutorial, hope to be helpful to everyone,

The Oracle stored procedure returns (N) workdays Based on the specified date. I have never written any Oracle stored procedures. Today I have a sudden demand: Calculate the first N working days of the specified date or the next N working days

Procedure for connecting NavicatforOracle to Oracle11G Procedure for connecting Navicat for Oracle to Oracle at 11 GB 1. Change the Oracle configuration file After installing Oracle 11g, you need to change the listener. ora and tnsnames. ora files

In Oracledb12c, The alert_sid.log permission is changed each time the log is switched. In 12c, The alert_sid.log permission is changed each time the log is switched. Applicable:Oracle Database-Enterprise Edition-Version 12.1.0.1 and laterInformation

Orcle create auto-increment Column I just used orcle. The team lead asked me to design a table. After the result is designed, I will design the primary key ID in PLSQL, because if I don't need to add an auto-increment column, I will use a composite

Summary of Small and Medium-sized ORACLE production tools In daily production, data sources are often diverse. Let's talk about the amount of data in excel today, because many development languages now support exporting data to excel, however, some

Oracle-1-InstallationI. Environment preparation1.1. DescriptionWorking path/data/hdfs/data1/jianxin/1.2. Software VersionOracle-xe-11.2.0-1.0.x86_64.rpm.zip1.3 modify tmpfs1.3.1. oracle XE provides the minimum requirement in the init. ora file. The

Description of the format parameter and rmanformat parameter corresponding to rman Replace the format variable. Note the case sensitivity! 1.% d -- db_name of the database 2.% n -- db_name with 8-bit length of the database. Fill the remaining part

Difference between sqlserver and oracle Reproduced in: http://blog.csdn.net/it_fengli/article/details/8213839 -- Difference between SQL server and oracle:-- DBMS Database Management System -- 1. Different data types. -- SQL server data types: int,

Oracle olap error ORA-06512: at "SYS. OLAPIHISTORYRETENTION", oraclesys default password After ORACLE 10g R2 is installed, the following error occurs when the database is started: Database Characterset is UTF8 replication_dependency_tracking

[Oracle] database table structure command When writing project documents, you may need to write the database table structure. It is very inefficient to right-click the editor to view the table structure and copy rows in one row. You can view the