FYI Center for Database Administrators

Time 2020-10-13 05:02:32

Web Name: FYI Center for Database Administrators

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Oracle Database TutorialsWhere to find Oracle database server tutorials? Here is a collection of tutorials, tips and FAQs for Oracle DBAs and Oracle database application developers. Clear explanations and simple examples provided can be used as learning tutorials or interview preparation guides. It doesn't matter whether yo... 2017-07-10, 9005 , 2 2017-07-10 sasi: Nice tutorial.. 1 2 3 4 5 6 Sort: RankShutdown 10g XE Server in OracleHow To Shutdown Your 10g XE Server in Oracle? If you want to shutdown your 10g Express Edition server, go to the Services manager in the control panel. You will a service called OracleServiceXE, which represents your 10g Express Edition server. Select OracleServiceXE, and use the right mouse click t... 2020-10-10, 779 , 0 Start 10g XE Server from Command Line in OracleHow To Start Your 10g XE Server from Command Line in Oracle? You can start your 10g XE server from command line by: Open a command line window. Change directory to \oraclexe\app\oracle\product\1 0.2.0\server\BIN\.Run StartDB.bat. The batch file StartDB.bat contains: net start OracleXETNSListener net... 2020-10-10, 677 , 0 Shutdown 10g XE Server from Commmand Line in OracleHow To Shutdown Your 10g XE Server from Command Line in Oracle? You can shutdown your 10g XE server from command line by: Open a command line window. Change directory to \oraclexe\app\oracle\product\1 0.2.0\server\BIN\.Run StopDB.bat. The batch file StopDB.bat contains: net stop OracleServiceXE   ⇒I... 2020-10-10, 636 , 0 Start 10g XE Server in OracleHow To Start Your 10g XE Server in Oracle? Go to the Start menu, select All Programs, Oracle Database 10g Express Edition, and Start Database.   ⇒Introduction to Oracle Database 10g Express Edition ⇒⇒Oracle Database Tutorials 2020-10-10, 619 , 0 Memory Usage of 10g XE Server in OracleHow Much Memory Your 10g XE Server Is Using in Oracle? Your 10g XE Server is using about 180MB of memory even there is no users on the server. The server memory usage is displayed on your server home page, if you log in as SYSTEM.   ⇒Introduction to Oracle Database 10g Express Edition ⇒⇒Oracle Data... 2020-10-10, 617 , 0 StartDB.bat Failed to Start the XE Instance in OracleWhat To Do If the StartDB.bat Failed to Start the XE Instance in Oracle? If StartDB.bat failed to start the XE instance, you need to try to start the instance with other approaches to get detail error messages on why the instance can not be started. One good approach to start the default instance is... 2020-09-30, 909 , 0 Change Program Global Area (PGA) in OracleHow To Change Program Global Area (PGA) in Oracle? Your 10g XE server has a default setting for Program Global Area (PGA) of 40MB. The PGA size can be changed to a new value depending on how much data a single session should be allocated. If you think your session will be short with a small amount o... 2020-09-30, 796 , 0 SGA Setting Is Too Low in OracleWhat Happens If You Set the SGA Too Low in Oracle? Let's you made a mistake and changed to SGA to 16MB from the SYSTEM admin home page. When you run the batch file StartDB.bat, it will return a message saying server stated. However, if you try to connect to your server home page: http://localhost:80... 2020-09-30, 749 , 0 Change System Global Area (SGA) in OracleHow To Change System Global Area (SGA) in Oracle? Your 10g XE server has a default setting for System Global Area (SGA) of 140MB. The SGA size can be changed to a new value depending on how many concurrent sessions connecting to your server. If you are running this server just for yourself to improv... 2020-09-30, 728 , 0 Unlock the Sample User Account in OracleHow To Unlock the Sample User Account in Oracle? Your 10g XE server comes with a sample database user account called HR. But this account is locked. You must unlock it before you can use it: Log into the server home page as SYSTEM. Click the Administration icon, and then click Database Users. Click ... 2020-09-30, 636 , 0 Show the Server Version in OracleHow To Check the Server Version in Oracle? Oracle server version information is stored in a table called: PRODUCT_COMPONENT_VERSION. You can use a simple SELECT statement to view the version information like this: .\bin\sqlplus Enter user-name: SYSTEM/fyicenter AS SYSDBA Connected to an idle... 2020-09-15, 806 , 0 Change Settings in Binary SPFile in OracleWhat To Do If the Binary SPFile Is Wrong for the Default Instance in Oracle? Let's say the SPFile for the default instance is a binary file, and some settings are wrong in the SPFile, like SGA setting is bellow 20MB, how do you change a setting in the binary file? This seems to be a hard task, becau... 2020-09-15, 800 , 0 Start the Default Instance in OracleHow To Use "startup" Command to Start Default Instance in Oracle? If you logged in to the server as a SYSDBA, you start the default instance with the "startup" command. Here is how to start the default instance in SQL*Plus in SYSDBA mode: .\bin\sqlplus Enter user-name: SYSTEM/fyicenter AS SY... 2020-09-15, 755 , 0 Login to Server without an Instance in OracleHow To Login to the Server without an Instance in Oracle? If your default instance is in trouble, and you can not use the normal login process to reach the server, you can use a special login to log into the server without any instance. Here is how to use SQL*Plus to log in as a system BDA: ... 2020-09-15, 714 , 0 Instance Settings Stored in SPFile in OracleWhere Are the Settings Stored for Each Instance in Oracle? Settings for each instance are stored in a file called Server Parameter File (SPFile). Oracle supports two types of parameter files, Text type, and Binary type. parameter files should be located in $ORACLE_HOME\database directory. A paramete... 2020-09-15, 698 , 0 Introduction to Command-Line SQL*Plus Client ToolWhere to find answers to frequently asked questions on Command-Line SQL*Plus Client Tool? I want to learn simple ways to run commands on Oracle database server. Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Command-Line SQL*Plus Client Tool. Cle... 2020-08-25, 869 , 0 Requirements for SQL*Plus Connection in OracleWhat Information Is Needed to Connect SQL*Plus an Oracle Server in Oracle? If you want to connect your SQL*Plus session to an Oracle server, you need to know the following information about this server: The network hostname, or IP address, of the Oracle server. The network port number where the Orac... 2020-08-25, 845 , 0 Start the Command-Line SQL*Plus in OracleHow To Start the Command-Line SQL*Plus in Oracle? If you Oracle server or client installed on your windows system, you can start the command-line SQL*Plus in two ways: 1. Click Start All Programs Oracle ... Start SQL Command Line. The SQL*Plus command window will show up w... 2020-08-25, 782 , 0 Help at the SQL Prompt in OracleHow To Get Help at the SQL Prompt in Oracle? 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 command as shown in the following tutorial example: SQL ... 2020-08-25, 741 , 0 Main Features of SQL*Plus in OracleWhat Is SQL*Plus in Oracle? SQL*Plus is an interactive and batch query tool that is installed with every Oracle Database Server or Client installation. It has a command-line user interface, a Windows Graphical User Interface (GUI) and the iSQL*Plus web-based user interface. SQL*Plus has its own comm... 2020-08-25, 728 , 0 Connect SQL*Plus Session to Oracle Server in OracleHow To Connect a SQL*Plus Session to an Oracle Server in Oracle? 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" called "FYI_XE" in your tnsnames.org file with the given con... 2020-08-13, 949 , 0 Error: Could not Resolve the Connect Identifier in OracleWhat Happens If You Use a Wrong Connect Identifier in Oracle? 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; ERROR: ORA-12154: TNS:could not resolve the connect ... 2020-08-13, 835 , 0 What Is a Connect Identifier in OracleWhat Is a Connect Identifier in Oracle? 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 stored in a file called tnsnames.ora located in $ORACLE_HOME/ne... 2020-08-13, 790 , 0 Reset Lost SYSTEM Password in OracleWhat To Do If DBA Lost the SYSTEM Password in Oracle? 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 sh... 2020-08-13, 778 , 0 1 2 3 4 5 6 Sort: Rank

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