What To Do If DBA Lost the SYSTEM Password

Q

What To Do If DBA Lost the SYSTEM Password? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool

✍: FYIcenter.com

A

If the DBA lost the password of the SYSTEM user account, he/she can go to the Oracle server machine, and run SQL*Plus on server locally with the operating system authentication method to gain access to the database. The tutorial exercise below shows you how:

(Terminal server to the Oracle server machine)
(Start SQL*Plus)
SQL>CONNECT / AS SYSDBA
Connected.

SQL> ALTER USER SYSTEM IDENTIFIED BY ssap_iyf;
User altered.

Notice that the (/) in the CONNECT command tells SQL*Plus to use the current user on local operating system as the connection authentication method.

2007-04-28, 5262👍, 0💬

What Is a Connect Identifier
What Is a Connect Identifier? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool A "connect identifier" is an identification string of a single set of connection information to a specific target database instance on a specific Oracle server. Connect identifiers are defined and stor... 2007-04-28, 5900👍, 0💬

What Happens If You Use a Wrong Connect Identifier
What Happens If You Use a Wrong Connect Identifier? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool Of course, you will get an error, if you use a wrong connect identifier. Here is an example of how SQL*Plus react to a wrong connect identifier: SQL> CONNECT fyi/retneciyf@WRONG; ... 2007-04-28, 5417👍, 0💬

What To Do If DBA Lost the SYSTEM Password
What To Do If DBA Lost the SYSTEM Password? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If the DBA lost the password of the SYSTEM user account, he/she can go to the Oracle server machine, and run SQL*Plus on server locally with the operating system authentication method to ... 2007-04-28, 5263👍, 0💬

How To Get Help at the SQL Prompt
How To Get Help at the SQL Prompt? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool Once SQL*Plus is started, you will get a SQL prompt like this: SQL>. This where you can enter commands for SQL*Plus to run. To get help information at the SQL prompt, you can use the HELP c... 2007-04-28, 5164👍, 0💬

How To Run PL/SQL Statements in SQL*Plus
How To Run PL/SQL Statements in SQL*Plus? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you want to run a single PL/SQL statement in SQL*Plus, you need to use the EXECUTE command as shown in the following tutorial example: SQL> SET SERVEROUTPUT ON SQL> EXECUTE DBMS_OUTPUT.P... 2007-04-29, 5142👍, 0💬

How To Connect a SQL*Plus Session to an Oracle Server
How To Connect a SQL*Plus Session to an Oracle Server? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool In order to connect a SQL*Plus session to an Oracle server, you need to: 1. Obtain the connection information from the Oracle server DBA. 2. Define a new "connect identifier" c... 2007-04-28, 5123👍, 0💬

How To Run SQL Commands in SQL*Plus
How To Run SQL Commands in SQL*Plus? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you want to run a SQL command in SQL*Plus, you need to enter the SQL command in one or more lines and terminated with (;). The tutorial exercise below shows a good example: SQL> SELECT 'Welco... 2007-04-29, 5120👍, 0💬

How To Change SQL*Plus System Settings
How To Change SQL*Plus System Settings? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool SQL*Plus environment is controlled a big list of SQL*Plus system settings. You can change them by using the SET command as shown in the following list: SET AUTOCOMMIT OFF - Turns off the auto... 2007-04-29, 5047👍, 0💬

How To Look at the Current SQL*Plus System Settings
How To Look at the Current SQL*Plus System Settings? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you want to see the current values of SQL*Plus system settings, you can use the SHOW command as shown in the following tutorial exercise: SQL> SHOW AUTOCOMMIT autocommit OFF S... 2007-04-29, 4982👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.