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What To Do If the Binary SPFile Is Wrong for the Default Instance
What To Do If the Binary SPFile Is Wrong for the Default Instance? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 se...
2007-04-25, 5059👍, 0💬

Where Are the Settings Stored for Each Instance
Where Are the Settings Stored for Each Instance? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 sho...
2007-04-25, 4848👍, 0💬

What Is SQL
What Is SQL? - Oracle DBA FAQ - Understanding SQL Basics SQL, SEQUEL (Structured English Query Language), is a language for RDBMS (Relational Database Management Systems). SQL was developed by IBM Corporation.
2007-04-24, 5039👍, 0💬

How To Login to the Server without an Instance
How To Login to the Server without an Instance? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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. He...
2007-04-24, 5481👍, 0💬

How To Use "startup" Command to Start Default Instance
How To Use "startup" Command to Start Default Instance? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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: ...
2007-04-24, 5123👍, 0💬

What Are the Oracle Built-in Data Types
What Are the Oracle Built-in Data Types? - Oracle DBA FAQ - Understanding SQL Basics There are 20 Oracle built-in data types, divided into 6 groups: Character Datatypes - CHAR, NCHAR, NVARCHAR2, VARCHAR2 Number Datatypes - NUMBER, BINARY_FLOAT, BINARY_DOUBLE Long and Row Datatypes - LONG, LONG RAW, ...
2007-04-24, 5139👍, 0💬

How Many Categories of Data Types
How Many Categories of Data Types? - Oracle DBA FAQ - Understanding SQL Basics Oracles supports the following categories of data types: Oracle Built-in Datatypes. ANSI, DB2, and SQL/DS Datatypes. User-Defined Types. Oracle-Supplied Types.
2007-04-24, 4948👍, 0💬

What To Do If the StartBD.bat Failed to Start the XE Instance
What To Do If the StartBD.bat Failed to Start the XE Instance? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition If StartBD.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 b...
2007-04-24, 5085👍, 0💬

What Happens If You Set the SGA Too Low
What Happens If You Set the SGA Too Low? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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...
2007-04-24, 5010👍, 0💬

What Are the Differences between CHAR and VARCHAR2
What Are the Differences between CHAR and VARCHAR2? - Oracle DBA FAQ - Understanding SQL Basics The main differences between CHAR and VARCHAR2 are: CHAR stores values in fixed lengths. Values are padded with space characters to match the specified length. VARCHAR2 stores values in variable lengths. ...
2007-04-24, 4876👍, 0💬

How To Change Program Global Area (PGA)
How To Change Program Global Area (PGA)? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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. ...
2007-04-24, 5208👍, 0💬

How To Change System Global Area (SGA)
How To Change System Global Area (SGA)? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 serve...
2007-04-24, 7383👍, 0💬

What Are the Differences between DATE and TIMESTAMP
What Are the Differences between DATE and TIMESTAMP? - Oracle DBA FAQ - Understanding SQL Basics The main differences between DATE and TIMESTAMP are: DATE stores values as century, year, month, date, hour, minute, and second. TIMESTAMP stores values as year, month, day, hour, minute, second, and fra...
2007-04-24, 5103👍, 0💬

What Are the Differences between NUMBER and BINARY_FLOAT
What Are the Differences between NUMBER and BINARY_FLOAT? - Oracle DBA FAQ - Understanding SQL Basics The main differences between NUMBER and BINARY_FLOAT are: NUMBER stores values as fixed-point numbers using 1 to 22 bytes. BINARY_FLOAT stores values as single precision floating-point numbers.
2007-04-24, 5387👍, 0💬

How To Shutdown Your 10g XE Server from Command Line
How To Shutdown Your 10g XE Server from Command Line? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 ...
2007-04-24, 5015👍, 0💬

How To Unlock the Sample User Account
How To Unlock the Sample User Account? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 t...
2007-04-24, 5211👍, 0💬

What Are the Differences between INTERVAL YEAR TO MONTH and INTERVAL DAY TO SECOND
What Are the Differences between INTERVAL YEAR TO MONTH and INTERVAL DAY TO SECOND? - Oracle DBA FAQ - Understanding SQL Basics The main differences between INTERVAL YEAR TO MONTH and INTERVAL DAY TO SECOND are: INTERVAL YEAR TO MONTH stores values as time intervals at the month level. INTERVAL DAY ...
2007-04-24, 5376👍, 0💬

What Are the Differences between BLOB and CLOB
What Are the Differences between BLOB and CLOB? - Oracle DBA FAQ - Understanding SQL Basics The main differences between BLOB and CLOB are: BLOB stores values as LOB (Large OBject) in bitstreams. CLOB stores values as LOB (Large OBject) in character steams.
2007-04-24, 5539👍, 0💬

How Much Memory Your 10g XE Server Is Using
How Much Memory Your 10g XE Server Is Using? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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.
2007-04-24, 4898👍, 0💬

How To Start Your 10g XE Server from Command Line
How To Start Your 10g XE Server from Command Line? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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...
2007-04-24, 5001👍, 0💬

What Are the ANSI Data Types Supported in Oracle
What Are the ANSI Data Types Supported in Oracle? - Oracle DBA FAQ - Understanding SQL Basics The following ANSI data types are supported in Oracle: CHARACTER(n) / CHAR(n) CHARACTER VARYING(n) / CHAR VARYING(n) NATIONAL CHARACTER(n) / NATIONAL CHAR(n) / NCHAR(n) NATIONAL CHARACTER VARYING(n) / NATIO...
2007-04-24, 5053👍, 0💬

How To Write Text Literals
How To Write Text Literals? - Oracle DBA FAQ - Understanding SQL Basics There are several ways to write text literals as shown in the following samples: SELECT 'FYICenter.com' FROM DUAL -- The most common format FYICenter.com SELECT 'It''s Sunday!' FROM DUAL -- Single quote escaped It's Sunday! SELE...
2007-04-24, 4998👍, 0💬

How To Start Your 10g XE Server
How To Start Your 10g XE Server? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition Go to the Start menu, select All Programs, Oracle Database 10g Express Edition, and Start Database.
2007-04-24, 4686👍, 0💬

How To Shutdown Your 10g XE Server
How To Shutdown Your 10g XE Server? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition 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 se...
2007-04-24, 4952👍, 0💬

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