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How To Write Numeric Literals
How To Write Numeric Literals? - Oracle DBA FAQ - Understanding SQL Basics Numeric literals can coded as shown in the following samples: SELECT 255 FROM DUAL -- An integer 255 SELECT -6.34 FROM DUAL -- A regular number -6.34 SELECT 2.14F FROM DUAL -- A single-precision floating point 2.14 SELECT -0.... 2007-04-24, 5295👍, 0💬

How To Write Date and Time Literals
How To Write Date and Time Literals? - Oracle DBA FAQ - Understanding SQL Basics Date and time literals can coded as shown in the following samples: SELECT DATE '2002-10-03' FROM DUAL -- ANSI date format 03-OCT-02 SELECT TIMESTAMP '1997-01-31 09:26:50.124' FROM DUAL 31-JAN-97 09.26.50.124000000 AM -... 2007-04-24, 5264👍, 0💬

How To Check Your Oracle Database 10g XE Installation
How To Check Your Oracle Database 10g XE Installation? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition If you want to check your fresh installation of 10g Express Edition without using any special client programs, you can use a Web browser with this address, http://localhost:8... 2007-04-24, 5159👍, 0💬

How To Install Oracle Database 10g XE
How To Install Oracle Database 10g XE? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition To install 10g universal edition, double click, OracleXEUniv.exe, the install wizard starts. It will guide you to finish the installation process. You should take notes about: The SYSTEM pas... 2007-04-24, 5157👍, 0💬

How To Convert Numbers to Characters
How To Convert Numbers to Characters? - Oracle DBA FAQ - Understanding SQL Basics You can convert numeric values to characters by using the TO_CHAR() function as shown in the following examples: SELECT TO_CHAR(4123.4570) FROM DUAL 123.457 SELECT TO_CHAR(4123.457, '$9,999,999.99') FROM DUAL $4,123.46... 2007-04-23, 5153👍, 0💬

How To Download Oracle Database 10g XE
How To Download Oracle Database 10g XE? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition If you want to download a copy of Oracle Database 10g Express Edition, visit http://www.oracle.com/technolo gy/software/products/database/ xe/.If you are using Windows systems, there are dow... 2007-04-23, 5279👍, 0💬

How To Write Date and Time Interval Literals
How To Write Date and Time Interval Literals? - Oracle DBA FAQ - Understanding SQL Basics Date and time interval literals can coded as shown in the following samples: SELECT DATE '2002-10-03' + INTERVAL '123-2' YEAR(3) TO MONTH FROM DUAL -- 123 years and 2 months is added to 2002-10-03 03-DEC-25 SEL... 2007-04-23, 5740👍, 0💬

What Operating Systems Are Supported by Oracle Database 10g XE
What Operating Systems Are Supported by Oracle Database 10g XE? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition Oracle Database 10g Express Edition is available for two types of operating Systems: Linux x86 - Debian, Mandriva, Novell, Red Hat and Ubuntu Microsoft Windows 2007-04-23, 4950👍, 0💬

How To Convert Characters to Numbers
How To Convert Characters to Numbers? - Oracle DBA FAQ - Understanding SQL Basics You can convert characters to numbers by using the TO_NUMBER() function as shown in the following examples: SELECT TO_NUMBER('4123.4570') FROM DUAL 4123.457 SELECT TO_NUMBER(' $4,123.46','$9,999,999.99') FROM DUAL 4123... 2007-04-23, 5877👍, 0💬

What Are the Limitations Oracle Database 10g XE
What Are the Limitations Oracle Database 10g XE? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition Oracle Database XE is free for runtime usage with the following limitations: Supports up to 4GB of user data (in addition to Oracle system data) Single instance only of Oracle Data... 2007-04-23, 5140👍, 0💬

How To Convert Dates to Characters
How To Convert Dates to Characters? - Oracle DBA FAQ - Understanding SQL Basics You can convert dates to characters using the TO_CHAR() function as shown in the following examples: SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY') FROM DUAL; -- SYSDATE returns the current date 07-MAY-2006 SELECT TO_CHAR(SYSDAT... 2007-04-23, 5303👍, 0💬

What is Oracle Database 10g Express Edition
What is Oracle Database 10g Express Edition? - Oracle DBA FAQ - Introduction to Oracle Database 10g Express Edition Based on Oracle Web site: Oracle Database 10g Express Edition (Oracle Database XE) is an entry-level, small-footprint database based on the Oracle Database 10g Release 2 code base that... 2007-04-23, 5075👍, 0💬

How To Convert Characters to Dates
How To Convert Characters to Dates? - Oracle DBA FAQ - Understanding SQL Basics You can convert dates to characters using the TO_DATE() function as shown in the following examples: SELECT TO_DATE('07-MAY-2006', 'DD-MON-YYYY') FROM DUAL; 07-MAY-06 SELECT TO_DATE('2006/05/07 ', 'YYYY/MM/DD') FROM DUAL... 2007-04-23, 5168👍, 0💬

How To Convert Times to Characters
How To Convert Times to Characters? - Oracle DBA FAQ - Understanding SQL Basics You can convert dates to characters using the TO_CHAR() function as shown in the following examples: SELECT TO_CHAR(SYSDATE, 'HH:MI:SS') FROM DUAL; 04:49:49 SELECT TO_CHAR(SYSDATE, 'HH24:MI:SS.FF') FROM DUAL; -- Error: S... 2007-04-23, 5572👍, 0💬

How To Build Data Dictionary View an New Database
How To Build Data Dictionary View an New Database? - Oracle DBA FAQ - Creating New Database Instance Manually This is Step 9. The Oracle Administrator Guide suggests to run two SQL scripts provided by Oracle as shown bellow: SQL> @/u01/oracle/rdbms/admin/catal og.sqlSQL> @/u01/oracle/rdbms/admin/cat.. . 2007-04-23, 5104👍, 0💬

How To Create Additional Tablespaces for an New Database
How To Create Additional Tablespaces for an New Database? - Oracle DBA FAQ - Creating New Database Instance Manually This is Step 8. Creating additional tablespaces can be done by using the CREATE TABLESPACE statement as shown in the following sample script: SQL> CREATE TABLESPACE users 2 DATAFILE '... 2007-04-23, 4987👍, 0💬

How To Convert Characters to Times
How To Convert Characters to Times? - Oracle DBA FAQ - Understanding SQL Basics You can convert dates to characters using the TO_CHAR() function as shown in the following examples: SELECT TO_CHAR(TO_DATE('04:49:49', 'HH:MI:SS'), 'DD-MON-YYYY HH24:MI:SS') FROM DUAL; -- Default date is the first day o... 2007-04-23, 5200👍, 0💬

What Is NULL
What Is NULL? - Oracle DBA FAQ - Understanding SQL Basics NULL is a special value representing "no value" in all data types. NULL can be used on in operations like other values. But most opertations has special rules when NULL is involved. The tutorial exercise below shows you some examples: SET NUL... 2007-04-23, 5597👍, 0💬

How To Run CREATE DATABASE Statement Again
How To Run CREATE DATABASE Statement Again? - Oracle DBA FAQ - Creating New Database Instance Manually After cleaning up the results of a previously failed CREATE DATABASE statement, you can run the CREATE DATABASE statement again as shown below: SQL> @$ORACLE_HOME\config\scripts\c reate_database_fyi... 2007-04-23, 5051👍, 0💬

How To Do Clean Up If CREATE DATABASE Failed
How To Do Clean Up If CREATE DATABASE Failed? - Oracle DBA FAQ - Creating New Database Instance Manually To better organize data files, you should create a dedicated directory for each Oracle database. This can be done by using Windows file explorer to create the \oraclexe\oradata\fyi\ directory. Tr... 2007-04-23, 5541👍, 0💬

How To Use NULL as Conditions
How To Use NULL as Conditions? - Oracle DBA FAQ - Understanding SQL Basics If you want to compare values against NULL as conditions, you should use the "IS NULL" or "IS NOT NULL" operator. Do not use "=" or "&lt;>" against NULL. The sample script below shows you some good examples: SELECT 'A' IS... 2007-04-23, 5581👍, 0💬

How To Concatenate Two Text Values
How To Concatenate Two Text Values? - Oracle DBA FAQ - Understanding SQL Basics There are two ways to concatenate two text values together: CONCAT() function. '||' operation. Here is some examples on how to use them: SELECT 'FYI' || 'Center' || '.com' FROM DUAL; FYICenter.com SELECT CONCAT('FYICente... 2007-04-23, 5735👍, 0💬

How To Run CREATE DATABASE Statement
How To Run CREATE DATABASE Statement? - Oracle DBA FAQ - Creating New Database Instance Manually This is Step 7. Oracle Administrator Guide provided a sample CREATE DATABASE statement. But it is a long statement. You can modify and same it in a file, $ORACLE_HOME/configscripts/cre ate_database_fyi.sq... 2007-04-23, 5201👍, 0💬

How To Start Instance with a Minimal Initialization Parameter File
How To Start Instance with a Minimal Initialization Parameter File? - Oracle DBA FAQ - Creating New Database Instance Manually The sample initialization parameter file provided by Oracle seems to be not working. But we can try to start the new instance with a minimal initialization parameter file (P... 2007-04-23, 5211👍, 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