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What Happens to Indexes If You Drop a Table
What Happens to Indexes If You Drop a Table? - Oracle DBA FAQ - Managing Oracle Table Indexes If you drop a table, what happens to its indexes? The answer is that if a table is dropped, all its indexes will be dropped too. Try the following script to see yourself: CREATE TABLE student (id NUMBER(5) ... 2007-05-02, 7617👍, 0💬

What Is the Relation of a User Account and a Schema
What Is the Relation of a User Account and a Schema? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges User accounts and schemas have a one-to-one relation. When you create a user, you are also implicitly creating a schema for that user. A schema is a logical container for the ... 2007-05-02, 5242👍, 0💬

What Is a User Role
What Is a User Role? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges A user role is a group of privileges. Privileges are assigned to users through user roles. You create new roles, grant privileges to the roles, and then grant roles to users. 2007-05-02, 5257👍, 0💬

Can You Drop an Index Associated with a Unique or Primary Key Constraint
Can You Drop an Index Associated with a Unique or Primary Key Constraint? - Oracle DBA FAQ - Managing Oracle Table Indexes You can not delete the index associated with a unique or primary key constraint. If you try, you will get an error like this: ORA-02429: cannot drop index used for enforcement o... 2007-05-02, 5345👍, 0💬

How To Drop an Index
How To Drop an Index? - Oracle DBA FAQ - Managing Oracle Table Indexes If you don't need an existing index any more, you should delete it with the DROP INDEX statement. Here is an example SQL script: CREATE TABLE student (id NUMBER(5) PRIMARY KEY, first_name VARCHAR(80) NOT NULL, last_name VARCHAR(8... 2007-05-02, 5102👍, 0💬

What Are Internal User Account
What Are Internal User Account? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges An internal user account is a system predefined user account. Oracle 10g XE comes with a number of internal accounts: SYSTEM - This is the user account that you log in with to perform all administ... 2007-05-02, 5322👍, 0💬

What Are the System Predefined User Roles
What Are the System Predefined User Roles? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges Oracle 10g XE comes with 3 predefined roles: CONNECT - Enables a user to connect to the database. Grant this role to any user or application that needs database access. RESOURCE - Enabl... 2007-05-02, 5547👍, 0💬

How To Rename an Index
How To Rename an Index? - Oracle DBA FAQ - Managing Oracle Table Indexes Let's say you have an existing index, and you don't like its name anymore for some reason, you can rename it with the ALTER INDEX ... RENAME TO statement. Here is an example script on how to rename an index: CREATE TABLE studen... 2007-05-02, 5294👍, 0💬

What Is an Index Associated with a Constraint
What Is an Index Associated with a Constraint? - Oracle DBA FAQ - Managing Oracle Table Indexes An index associated with a constraint because this constraint is required to have an index. There are two types of constraints are required to have indexes: UNIQUE and PRIMARY KEY. When you defines a UNIQ... 2007-05-02, 5298👍, 0💬

How To Create a Table Index
How To Create a Table Index? - Oracle DBA FAQ - Managing Oracle Table Indexes If you have a table with a lots of rows, and you know that one of the columns will be used often a search criteria, you can add an index for that column to in improve the search performance. To add an index, you can use th... 2007-05-02, 5156👍, 0💬

How To Connect to the Server with User Account: SYS
How To Connect to the Server with User Account: SYS? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges SYS is a very special user account. It has been associated with the highest privilege call SYSDBA. Normally, you should not connect to the server with SYS. But if you want to ... 2007-05-02, 5106👍, 0💬

How To List All Indexes in Your Schema
How To List All Indexes in Your Schema? - Oracle DBA FAQ - Managing Oracle Table Indexes If you log in with your Oracle account, and you want to get a list of all indexes in your schema, you can get it through the USER_INDEXES view with a SELECT statement, as shown in the following SQL script: SELEC... 2007-05-02, 5398👍, 0💬

How To Use Windows User to Connect to the Server
How To Use Windows User to Connect to the Server? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges During the installation process, 10g XE will create a special Windows user group called ORA_DBA, and put your Windows user into this group. Any Windows users in this group can be... 2007-05-02, 5308👍, 0💬

How To List All User Accounts
How To List All User Accounts? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges User accounts can be accessed through a system view called ALL_USERS. A simple SELECT statement can be used to get a list of all user accounts. Try the following script: >.\bin\sqlplus /nolog SQL> ... 2007-05-02, 5834👍, 0💬

What Is a Table Index
What Is a Table Index? - Oracle DBA FAQ - Managing Oracle Table Indexes Index is an optional structure associated with a table that allow SQL statements to execute more quickly against a table. Just as the index in this manual helps you locate information faster than if there were no index, an Oracl... 2007-05-02, 4950👍, 0💬

How To Run SQL Statements through the Web Interface
How To Run SQL Statements through the Web Interface? - Oracle DBA FAQ - Managing Oracle Table Indexes If you don't like the command line interface offered by SQL*Plus, you can use the Web interface to run SQL statements. Here is how: Open your Web browser to http://localhost:8080/apex/ Log in to the... 2007-05-02, 5155👍, 0💬

How To Create a New User Account
How To Create a New User Account? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges If you want to create a new user account, you can log in as SYSTEM and use the CREATE USER command as shown in the following example: >.\bin\sqlplus /nolog SQL> connect SYSTEM/fyicenter Connecte... 2007-05-02, 5324👍, 0💬

How To Invoke the Original Export Import Utilities
How To Invoke the Original Export Import Utilities? - Oracle DBA FAQ - Loading and Exporting Data If you really want to run the original export import utilities, you can still go to "bin" directory of the Oracle server path and run the "exp" or "imp" command. The tutorial exercise below tells you ho... 2007-05-02, 5256👍, 0💬

What Are the Original Export and Import Utilities
What Are the Original Export and Import Utilities? - Oracle DBA FAQ - Loading and Exporting Data Oracle original Export and Import utilities are standalone programs that provide you a simple way for you to transfer data objects between Oracle databases, even if they reside on platforms with differen... 2007-05-02, 5966👍, 0💬

How To Change User Password
How To Change User Password? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges If you want to change a user's password, you can log in as SYSTEM and use the ALTER USER command as shown in the following example: >.\bin\sqlplus /nolog SQL> connect SYSTEM/fyicenter Connected. SQL>... 2007-05-02, 5464👍, 0💬

How To Delete a User Account
How To Delete a User Account? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges If you want to delete a user account and its associated schema, you can log in as SYSTEM and use the DROP USER command as shown in the following example: >.\bin\sqlplus /nolog SQL> connect SYSTEM/fy... 2007-05-02, 7971👍, 0💬

How To Import One Table Back from a Dump File
How To Import One Table Back from a Dump File? - Oracle DBA FAQ - Loading and Exporting Data If you only want to import one table back to the database, you can use a dump file that was created by full export, schema export or a table export. The following tutorial exercise shows you how to import th... 2007-05-02, 5661👍, 0💬

What Privilege Is Needed for a User to Connect to Oracle Server
What Privilege Is Needed for a User to Connect to Oracle Server? - Oracle DBA FAQ - Managing Oracle User Accounts, Schema and Privileges Oracle deny connection to users who has no CREATE SESSION privilege. Try the following tutorial exercise, you will find out how Oracle denies connection: >.\bin\sq... 2007-05-02, 5425👍, 0💬

What Happens If the Imported Table Already Exists
What Happens If the Imported Table Already Exists? - Oracle DBA FAQ - Loading and Exporting Data If the import process tries to import a table that already exists, the Data Pump Import utility will return an error and skip this table. The following exercise shows you a good example: >cd \oraclexe\ap... 2007-05-02, 5146👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML