1. Simple iSQL*PLUS
An Oracle iSQL*PLUS User Guide
Created by Stephen Krebsbach
Sept 10, 2003
Dakota State University
Computer Science Department

2. Simple iSQL*PLUS version 1.0
The following document was created for the Database classes at DSU and is not a formal
document of ORACLE corp. This document is a simple subset of the iSQL*PLUS interface
commands that can be used to interact with an ORACLE database. iSQL*PLUS is a very
powerful tool for query and report generation. More information can be found in the iSQL*PLUS
user's guide.
Connecting to iSQL*PLUS
To connect to the iSQL*PLUS interface you should first open a web browser such as Internet
Explorer or Netscape Navigator.
Go to the URL: http://jaba.dsu.edu/isqlplus
Your instructor will give you a username, password and connection identifier.
The iSQL*PLUS Interface
From this interface you can work with your database interactively or run scripts. You can also
save your output to a file.
To logout, use the logout button at the top right of the screen.
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3. Entering SQL Statements
In the input window you can enter any valid ORACLE SQL statement. This can be done on
iSQL*PLUS one line or several lines and is free-format. To go to a new line just press [ENTER]. Pressing
offers the user [EXECUTE] will then execute the SQL statement with the resulting table being printed to the
both SQL display.
statements and
Entering Non-SQL commands
Non-SQL
statements A very powerful feature of iSQL*PLUS is its formatting features along with other commands
which will make processing of the SQL queries more user friendly. Many of the commands you
will use in iSQL*PLUS are not SQL commands. It is important for you to understand the
difference since these commands will not be available outside of the ORACLE SQL*PLUS
environment. An example is the describe command that can be used to get the schema for a table.
This is a command that only works within SQL*PLUS.
Output Options
When you execute a command, you have three options to where you would like the output to be
presented.
WORK SCREEN : in the current window you are working in
WINDOW: in a new browser window
FILE: the output can be redirected to file
Loading Scripts
Scripts are text files, (often called START files in ORACLE), that are a list of commands to be
executed. You can load a script file into the input window by placing its location in the Script
Location input box at the top right of the screen. You can type in the location or use the
[BROWSE] button to help locate it. Once you have entered the location, the [LOAD SCRIPT]
button will load it into the input command window.
Saving a Script
You can save the commands in the command input window to a script file by using the {Save
Script] button at the lower right of the screen.
Changing your Password
You can use the [PASSWORD] button at the top of the screen to change your current password
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4. iSQL*PLUS Commands
The following is a listing of 'some' of the iSQL*PLUS commands you may find useful. They are
not in alphabetical order but instead are ordered in an attempt to present them in useful groupings
etc.. Many of these commands are non-SQL. You can also use the Help located at the top right of
the screen.
Set {argument}
SQL*PLUS allows you to set many parameters and options for your session. The set command
will be used to set these parameters and options. Several of these will be introduced in this
document. Many of these options are set to some default value.
example: set numwidth 5
Show {argument}
The show command will echo the value of the argument setting.
example: show numwidth
reply: numwidth 5
Remark , /* */ , --
iSQL*PLUS
provides three SQL*PLUS allows you to embed comments into your SQL*PLUS statements in three (3) ways.
ways to include
comments. For a comment on a line by itself use remark or rem
example: rem -- this is a comment and will be ignored
For a one-line comment which is placed at the end of a line use --
example: select * from EMPLOYEE -- comment about this line here
For comments which extend over several lines use /* */
example: /* Everything between these
these delimiters is
ignored as a comment */
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5. Spool {filename}|{off} {NOT AVAIABLE in iSQL INTERFACE}
Spool will redirect the output which is placed on the display to the filename given. It will create
the file if it does not exist. If it does, it will be overwritten. Spool can be used to save the output
of your query into a text file. Spool will continue to write everything displayed into the file until it
is shut off.
example: spool result.lst
Select * from EMPLOYEE;
spool off
This example would save both the SQL query statement and the resulting table into the test file
result.lst. It can then printed or reviewed at some later date.
Save {filename}{repl}{NOT AVAIABLE in iSQL INTERFACE}
Whenever you enter an SQL statement in SQL*PLUS, the statement is saved in a buffer. The
Save and Start contents of this buffer contains only the SQL statement and no SQL*PLUS statements! The
contents of the buffer can be saved to a text file using the save command.
can be used
together to example: SQL> save query1.sql
create a
formatted SQL The example will save the content of the buffer into a text file called query1.sql. This file can then
Report which be reloaded and run later.
includes both If the file being saved already exists then you must use the replace option to overwrite it.
the SQL query
and the example: SQL> save query1.sql repl
SQL*PLUS
format Start {filename}
statements The start command allows you to load and execute a text file as if you had just typed it in using
the keyboard.
example: start query1.sql
A common practice is to create the SQL statement interactively until it is getting the desired
results. Saving the SQL statement into a file. Editing the file using a text editor to include any
SQL*PLUS formatting statements you wish to use and then using start to execute this new file to
generate a formatted report.
Host {command}{NOT AVAIABLE in iSQL INTERFACE}
The host command allows you to execute a host system statement without exiting SQL*PLUS.
example: SQL> host ls
This example shows how to get a listing from the current Unix directory from SQL*PLUS.
To call the vi editor with some file you must first define the editor.
example: SQL> define _editor = "vi"
SQL> host vi test.sql
This example allows you to call the vi editor from SQL*PLUS and have it load up the text file
test.sql. On exit from the vi editor you are returned to SQL*PLUS.
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6. SQL*PLUS Editing Commands{NOT AVAIABLE in iSQL
INTERFACE}
SQL*PLUS has a simple line editor which can be used to edit the SQL command buffer. The
command buffer holds the last SQL statement entered. Many time this will be quicker than saving
the buffer, exiting SQL*PLUS, editing the file, reloading SQL*PLUS and then executing the
command using start. It may also be quicker than using the host command with a defined editor.
List [ln#]
The list command will display a listing of the SQL command buffer.
example: SQL> list
The listing will have a line number for each line in the buffer. If you wish to list only a single line
you can add the line number option.
example: SQL> list 3
This example lists only line 3 in the buffer which is now considered the current buffer line.
Change {/old string / new string} {NOT AVAIABLE in iSQL INTERFACE}
The change command allows you to change and string found on the current buffer line with a new
string.
example: SQL> change / ugdate tabble / update table
This example will change the substring 'ugdate tabble' with the substring 'update table' if the
substring is found in the current buffer line.
Slash / {NOT AVAIABLE in iSQL INTERFACE}
The Slash can be used to run the contents of the current buffer.
example: SQL> /
This example will run what ever is in the current SQL buffer.
Save {NOT AVAIABLE in iSQL INTERFACE}
See Save in the SQL*PLUS Commands section.
Load {filename} {NOT AVAIABLE in iSQL INTERFACE}
The load command will load a saved SQL text file into the SQL command buffer. Remember that
Non-SQL commands will not be put into the buffer.
example: SQL> load mytest.sql
The example will load the text file mytest.sql into the SQL command buffer.
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7. iSQL*PLUS Report Format Commands
iSQL*PLUS also has several options which can be used with the set command to format the
output of an SQL query. There are also other SQL*PLUS commands which can be used for report
generation.
DOCUMENTATION
Using the Help feature provided in the iSQL interface will bring up a screen with links help on all
the commands in iSQL*PLUS and links to SQL and P/SQL commands
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