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How To Get Execution Statistics Reports on Query Statements
How To Get Execution Statistics Reports on Query Statements? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If your user account has autotrace configured by the DBA, you can use the "SET AUTOTRACE ON STATISTICS" command to turn on execution statistics reports on query statement... 2007-04-30, 5221👍, 0💬

What Is the Simplest Tool to Run Commands on Oracle Servers
What Is the Simplest Tool to Run Commands on Oracle Servers? - Oracle DBA FAQ - Loading and Exporting Data The simplest tool to connect to an Oracle server and run commands to manage data is SQL*Plus. It is an Oracle database client tool that works as a command-line user interface to the database se... 2007-04-30, 4867👍, 0💬

How To Convert Character Types to Numeric Types
How To Convert Character Types to Numeric Types? - Oracle DBA FAQ - Understanding PL/SQL Language Basics You can convert character types to numeric types in two ways: Explicitly by using TO_NUMBER() function. Implicitly by putting character data in a numeric operation. The sample script below shows ... 2007-04-30, 6167👍, 0💬

What Are the Execution Control Statements
What Are the Execution Control Statements? - Oracle DBA FAQ - Understanding PL/SQL Language Basics PL/SQL supports three groups of execution control statements: IF Statements - Conditionally executes a block of statements. CASE Statements - Selectively executes a block of statements. LOOP Statements... 2007-04-30, 5484👍, 0💬

How To Get Execution Path Reports on Query Statements
How To Get Execution Path Reports on Query Statements? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If your user account has autotrace configured by the DBA, you can use the "SET AUTOTRACE ON EXPLAIN" command to turn on execution path reports on query statements. The tutorial... 2007-04-30, 5380👍, 0💬

How To Set Up Autotrace for a User Account
How To Set Up Autotrace for a User Account? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If an Oracle user wants to use the autotrace feature, you can use the tutorial as an example to create the required table PLAN_TABLE, the required security role PLUSTRACE, and grant the r... 2007-04-30, 6177👍, 0💬

How To Use "IF" Statements on Multiple Conditions
How To Use "IF" Statements on Multiple Conditions? - Oracle DBA FAQ - Understanding PL/SQL Language Basics If you have multiple blocks of codes to be executed based on different conditions, you can use the "IF ... ELSIF" statement. Here is a sample script on IF statements: DECLARE day VARCHAR2; BEGI... 2007-04-29, 8361👍, 0💬

How To Use "WHILE" Statements
How To Use "WHILE" Statements? - Oracle DBA FAQ - Understanding PL/SQL Language Basics If you have a block of codes to be executed repeatedly based a condition, you can use the "WHILE ... LOOP" statement. Here is a sample script on WHILE statements: DECLARE total NUMBER; BEGIN total := 0; WHILE tota... 2007-04-29, 5434👍, 0💬

How To Use SQL*Plus Built-in Timers
How To Use SQL*Plus Built-in Timers? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you don't have a stopwatch/timer and want to measure elapsed periods of time, you can SQL*Plus Built-in Timers with the following commands: TIMING - Displays number of timers. TIMING START [n... 2007-04-29, 4788👍, 0💬

What Is Oracle Server Autotrace
What Is Oracle Server Autotrace? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool Autotrace is Oracle server feature that generates two statement execution reports very useful for performance tuning: Statement execution path - Shows you the execution loop logic of a DML statement... 2007-04-29, 5144👍, 0💬

How To Use "FOR" Statements
How To Use "FOR" Statements? - Oracle DBA FAQ - Understanding PL/SQL Language Basics If you have a block of codes to be executed repeatedly over a range of values, you can use the "FOR ... LOOP" statement. Here is a sample script on FOR statements: DECLARE total NUMBER := 0; BEGIN FOR i IN 1..10 LOO... 2007-04-29, 5616👍, 0💬

How To Revise and Re-Run the Last SQL Command
How To Revise and Re-Run the Last SQL Command? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If executed a long SQL statement, found a mistake in the statement, and you don't want enter that long statement again, you can use the input buffer commands to the correct last statem... 2007-04-29, 4935👍, 0💬

How Run SQL*Plus Commands That Are Stored in a Local File
How Run SQL*Plus Commands That Are Stored in a Local File? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you have a group of commands that you need to run them repeatedly every day, you can save those commands in a file (called SQL script file), and using the "@fileName" co... 2007-04-29, 4885👍, 0💬

What Is NULL in PL/SQL
What Is NULL in PL/SQL? - Oracle DBA FAQ - Understanding PL/SQL Language Basics NULL is a reserved key word and it stands for two things in PL/SQL: NULL is an executable statement, and means doing nothing. NULL is a data balue, and means no value. The following sample script shows you examples of us... 2007-04-29, 5149👍, 0💬

How To Test NULL Values
How To Test NULL Values? - Oracle DBA FAQ - Understanding PL/SQL Language Basics There ate two special comparison operators you can use on NULL values: "variable IS NULL" - Returns TRUE if the variable value is NULL. "variable IS NOT NULL" - Return TRUE if the variable value is not NULL. The followi... 2007-04-29, 5997👍, 0💬

What Is a Cursor
What Is a Cursor? - Oracle DBA FAQ - Working with Cursors in PL/SQL A cursor looks like a variable, but it is not a variable. A cursor looks like a procedure, but it is not a procedure. A cursor is a cursor. It is a logical representation of a resource connects to a set of data rows related to a DML... 2007-04-29, 5167👍, 0💬

How To Save Query Output to a Local File
How To Save Query Output to a Local File? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool Normally, when you run a SELECT statement in SQL*Plus, the output will be displayed on your screen. If you want the output to be saved to local file, you can use the "SPOOL fileName" comman... 2007-04-29, 6513👍, 0💬

What Is Input Buffer in SQL*Plus
What Is Input Buffer in SQL*Plus? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool Input buffer is a nice feature of the command-line SQL*Plus tool. It allows you to revise a multiple-line command and re-run it with a couple of simple commands. By default, input buffer is always ... 2007-04-29, 4871👍, 0💬

How Many Types of Cursors Supported in PL/SQL
How Many Types of Cursors Supported in PL/SQL? - Oracle DBA FAQ - Working with Cursors in PL/SQL PL/SQL supports two types of cursors: The implicit cursor - A single default cursor that automatically connects to the last DML statement executed. Explicit cursors - User defined cursors with specific D... 2007-04-29, 5440👍, 0💬

What Is the Implicit Cursor
What Is the Implicit Cursor? - Oracle DBA FAQ - Working with Cursors in PL/SQL There is only one implicitly cursor in a session. The implicit cursor is the cursor automatically defined by PL/SQL for you. Whenever a SQL statement is executed, this cursor will be assigned to represent the execution of... 2007-04-29, 5024👍, 0💬

How To Generate Query Output in HTML Format
How To Generate Query Output in HTML Format? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool If you want your query output to be generated in HTML format, you can use the "SET MARKUP HTML ON" to turn on the HTML feature. The following tutorial exercise gives you a good example: ... 2007-04-29, 5445👍, 0💬

What Is Output Spooling in SQL*Plus
What Is Output Spooling in SQL*Plus? - Oracle DBA FAQ - Introduction to Command-Line SQL*Plus Client Tool The output spooling a nice feature of the command-line SQL*Plus tool. If the spooling feature is turned on, SQL*Plus will send a carbon copy of the everything on your screen to a specified local... 2007-04-29, 5662👍, 0💬

How To Loop through Data Rows in the Implicit Curosr
How To Loop through Data Rows in the Implicit Curosr? - Oracle DBA FAQ - Working with Cursors in PL/SQL You use the FOR ... IN ... LOOP statement to loop through data rows in the implicit cursor as the following syntax: FOR row IN dml_statement LOOP (statement block with row.field) END LOOP; Here "r... 2007-04-29, 5152👍, 0💬

How To Use Attributes of the Implicit Cursor
How To Use Attributes of the Implicit Cursor? - Oracle DBA FAQ - Working with Cursors in PL/SQL Right after executing a DML statement, you retrieve any attribute of the implicit cursor by using SQL%attribute_name, as shown in the following tutorial exercise: CREATE TABLE student (id NUMBER(5) PRIMAR... 2007-04-29, 5088👍, 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