benefits of oracle database

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Oracle 10 Gb manual database creation method

Oracle 10 Gb manual database creation method generally, the tool that is more convenient to create a database is to use the dbca tool that comes with oracle, which is really very convenient. However, production databases in some industries (such as telecommunications and finance) have the requirement for manual

Oracle OEM database creation instances and oracleoem database creation

Oracle OEM database creation instances and oracleoem database creation OEM is a graphical database administrator tool. It provides a centralized system management tool for database administrators. It is also a tool for managing, diagnosing, and debugging multiple databases,

Simulate Oracle Database Server disconnection using implicit parameters, and redo log loss to open the database

The simulated server suddenly loses power, the database is lost, and the transaction cannot be recovered from the rollback failure.The database status is as follows:SQL> select instance_name, status from v $ instance;INSTANCE_NAME STATUS----------------------------Marven OPENNon-archive mode:SQL> archive log listDatabase log mode No Archive ModeAutomatic archival DisabledArchive destination/u01/app/

Oracle archive mode Common commands for ORACLE Database archive logs

-- Connection recovery ManagerC: \ Documents ents and Settings \ mengzhaoliang> rman target/-- Archive log listRMAN> list archivelog all;-- Delete archive logs that do not exist in the physical fileRMAN> delete expired archivelog all;-- Delete archived logs 7 days agoRMAN> delete archivelog all completed before 'sysdate-7 ';Oracle archiving Mode I. Check whether the oracle

Some key points in organizing data query optimization in Oracle database _oracle

, Alter table Your_table_name cathe. Oracle Query Optimization The second aspect: Optimization of multi-table query The database may take a mergejoins, NESTED LOOP, HASH JOIN when making a multiple-table federated query. In this case, the hash join is less expensive than the other two connections. We can use hash joins instead of Mergejoins, NESTED Loop joins, so in applications, you can add settings tha

Detailed steps for linux to completely uninstall oracle after oracle stops the database

1. Use SQL * PLUS to stop a databaseCopy codeThe Code is as follows:$ Sqlplus/nolog SQL> connect/as sysdba SQL> shutdown [immediate] SQL> exit 2. Stop ListenerCopy codeThe Code is as follows:$ Lsnrctl stop 3. Stop the HTTP serviceCopy codeThe Code is as follows:# Service httpd stop 4. Use su or log on to the root again (if you want to reinstall it, You can retain the oracle user, saving you the need to enter environment variables) 5. Delete the instal

Unmount the Oracle database on Linux and the linuxoracle Database

Unmount the Oracle database on Linux and the linuxoracle Database See the article Red Hat5 installing Oracle 11gR2 (http://blog.csdn.net/johnnysun2015/article/details/45022119. 1. Stop the Oracle database SQL> showdown immediate

How to migrate a MySQL database to Oracle database _ MySQL

How to migrate a MySQL database to an Oracle database bitsCN.com: Tools to be prepared: 1. jdbc driver mysql-connector-java-5.0.4-bin.jar connecting to Mysql 2. SQL Developer 1.2 developed by Oracle Company The following is how to configure SQL Developer 1.2 Configuration environment: Select Tools-Preferences-

Oracle Database Error ORACLE not available solution

Oracle Database error ORACLE not available solution the following Error occurs when running commands such as exp, imp, or sqlplus: EXP-00056: ORACLE error 1034 encounteredORA-01034: ORACLE not availableORA-27101: shared memory realm does not existLinux-x86_64 Error: 2: No su

DBA interview mode of Oracle Database

The following articles mainly introduce the example of Oracle Database DBA interview questions. This article describes the basic mode of Oracle Database DBA interview questions in a one-Answer manner, the following is an introduction to the related interview questions. I hope you will get some

Oracle (1) -- & gt; Detailed description of database objects (Text explanation, first of all a small understanding ~), Oracle details

Oracle (1) --> detailed description of database objects (Text explanation, first of all a small understanding ~), Oracle details---- Database object: a set of logical structures ----1. Synonym: alias of an existing object/*Purpose:Simplify SQL statementsHide the Object Name and ownerProvide public access to objectsCate

Oracle Database File Corruption, error: ORA-01033: Oracle initialization or shutdown in progress

Oracle Database File Corruption has been solved. The problem is "error: ORA-01033: Oracle initialization or shutdown in progress", and later from the Internet to find some information, and finally add their own practice finally solved, but there is a problem, it seems that the database files are useless. SolutionIn a

Oracle Performance Diagnosis art (milestone book on Oracle Database optimization)

Oracle Performance Diagnosis art (milestone book on Oracle Database optimization) [Original book name] troubleshooting Oracle Performance[Original Publishing House] apress[Author] (Swiss) Christian antognini [same as the author's work] [Translator's introduction][Translated by] Tong Jiawang; Hu Yiwen; Feng dahui [same

Oracle------------->pl/sql----------------> Connect Oracle Database

Tags: IP address server directory. COM class sign Ted cat remote serverFirst, the development environment requirements: The premise is that the computer must have an Oracle client installed. Installed the Pl-sql software Second, configure PL-SQ and connect Oracle Configuration method: 1. Locate the installation directory for Oracle.

Java connection to MySQL database and Oracle database with simple SQL operation

+ "," + categories_id + "," +date_added); } } Catch(ClassNotFoundException e) {e.printstacktrace (); } Catch(SQLException e) {e.printstacktrace (); } //connecting to an Oracle databaseDburl = "Jdbc:oracle:thin: @host:p ort:dbname"; DbUser= "Oracle_username"; Dbpwd= "Oracle_password"; Try{Connection con=getoracleconnection (Dburl, DbUser, dbpwd); stmt=con.createstatement (); String SQL= "SELECT Name ID from user"; RS=s

Interview Title: Database Oracle database not seen 6

Oracle Database Face Test SummaryApril 27, 2017 22:41:44Hits: 92711. SQL Statement ClassificationDQL (data query Language) SELECTDML (Data manipulation language) Insert, delete, updateDDL (data definition Language) Create, DROP, alterDCL (Data Control Language) Grant: Granting Permissions to users, revoke: Recovering permissions from the userTPL (TCL, Transaction Control Language): Commit, rollback2. How

Analysis of ORA-600 3020 Error recovery in Oracle database

Recover Database Report ORA-600 3020 The code is as follows Copy Code Recovery of Online Redo log:thread 1 Group 2 Seq 5729 Reading mem 0mem# 0:e:\oracle\oradata\yygdb\redo02.logTue Aug 19 19:37:29 2014Errors in File D:\oracle\diag\rdbms\yygdb\yygdb\trace\yygdb_pr0s_4296.trc (incident=39403):Ora-00600:internal error code, arguments: [30

Windows to install the Oracle database

information for the Oracle database is registered.4. Delete the registered Oracle Event log and open the registryHkey_local_machine\system\currentcontrolset\services\eventlog\applicationDelete all entries in the registry that begin with Oracle.5. Delete the environment variables for

Sybase Database and Oracle database usage

. Users of fromuser and touser can be different) Rows = y Indexes = y Grants = y Constraints = y Buffer= 409600 File =/backup/ctgpc_20030623.dmp Log =/backup/import_20030623.log Supplement: adding feedback = 1000 in the Import/Export command can display an increasing number of "..." in the process to change the blinking cursor. In short, Oracle Database Export (exp)/import (IMP) Exp The

ORACLE11G database installation and use NAVICAT Premium for Oracle Database Connectivity

---restore content starts---1. Download 11g on the Oracle website firstOracle Database 11g 2nd edition (11.2.0.1.0) Standard Edition, Standard Edition 1, and Enterprise Edition, Oracle Database 11g 2nd edition for Microsoft Windows (x64) (11.2.0.1.0 ), (sign-in required):Http://download.oracle.com/otn/nt/oracle11g/1120

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