<s>
SQL	B-Application
Plus	I-Application
is	O
the	O
most	O
basic	O
Oracle	B-General_Concept
Database	I-General_Concept
utility	O
,	O
with	O
a	O
basic	O
command-line	B-Application
interface	I-Application
,	O
commonly	O
used	O
by	O
users	O
,	O
administrators	O
,	O
and	O
programmers	O
.	O
</s>
<s>
SQL	B-Application
Plus	I-Application
understands	O
five	O
categories	O
of	O
text	O
:	O
</s>
<s>
SQL	B-Application
Plus	I-Application
internal	O
commands	O
,	O
for	O
example	O
:	O
</s>
<s>
An	O
Oracle	B-General_Concept
programmer	O
in	O
the	O
appropriately	O
configured	O
software	O
environment	O
can	O
launch	O
SQL	B-Application
Plus	I-Application
,	O
for	O
example	O
,	O
by	O
entering	O
:	O
</s>
<s>
where	O
the	O
Oracle	B-General_Concept
user	O
scott	O
has	O
the	O
password	O
tiger	O
.	O
</s>
<s>
SQL	B-Application
Plus	I-Application
then	O
presents	O
a	O
prompt	O
with	O
the	O
default	O
form	O
of	O
:	O
</s>
<s>
Interactive	O
use	O
can	O
then	O
start	O
by	O
entering	O
a	O
SQL	O
statement	O
(	O
terminated	O
by	O
a	O
semicolon	O
)	O
,	O
a	O
PL/SQL	B-Language
block	O
,	O
or	O
another	O
command	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
SQL	B-Application
Plus	I-Application
was	O
called	O
UFI	O
(	O
"	O
User	O
Friendly	O
Interface	O
"	O
)	O
.	O
</s>
<s>
UFI	O
appeared	O
in	O
Oracle	B-General_Concept
database	I-General_Concept
releases	O
up	O
to	O
Version	O
4	O
.	O
</s>
<s>
After	O
Oracle	B-General_Concept
programmers	O
had	O
added	O
new	O
features	O
to	O
UFI	O
,	O
its	O
name	O
became	O
Advanced	O
UFI	O
.	O
</s>
<s>
The	O
name	O
"	O
Advanced	O
UFI	O
"	O
changed	O
to	O
"	O
SQL	B-Application
Plus	I-Application
"	O
with	O
the	O
release	O
of	O
the	O
version	O
5	O
of	O
Oracle	B-General_Concept
.	O
</s>
<s>
Graphical	O
interfaces	O
from	O
Oracle	B-General_Concept
or	O
third	O
parties	O
have	O
diminished	O
the	O
proportion	O
of	O
Oracle	B-General_Concept
database	I-General_Concept
end-users	O
who	O
depend	O
on	O
the	O
SQL	B-Application
Plus	I-Application
environment	O
.	O
</s>
<s>
Oracle	B-General_Concept
shops	O
typically	O
continue	O
to	O
use	O
SQL	B-Application
Plus	I-Application
scripts	O
for	O
batch	O
updating	O
or	O
simple	O
reports	O
.	O
</s>
<s>
Oracle	B-General_Concept
Corporation	O
's	O
wrappers/gui-fications/replacements	O
for	O
SQL	B-Application
Plus	I-Application
include	O
:	O
</s>
<s>
Starting	O
from	O
Oracle	B-General_Concept
database	I-General_Concept
11g	O
,	O
iSqlplus	O
(	O
web	O
based	O
)	O
and	O
sqlplus	B-Application
GUI	O
no	O
longer	O
ship	O
with	O
Oracle	B-General_Concept
database	I-General_Concept
software	O
.	O
</s>
<s>
The	O
command-line	B-Application
SQL	B-Application
Plus	I-Application
interface	O
continues	O
in	O
use	O
,	O
mostly	O
for	O
non-interactive	O
scripting	O
or	O
for	O
administrative	O
purposes	O
.	O
</s>
<s>
The	O
Server	O
Manager	O
Command	B-Application
Line	I-Application
a	O
replacement	O
of	O
SQL*DBA	O
is	O
obsolete	O
and	O
SQL	B-Application
Plus	I-Application
8i	O
and	O
later	O
allows	O
the	O
user	O
to	O
issue	O
statements	O
like	O
and	O
when	O
connected	O
as	O
SYSDBA	O
.	O
</s>
<s>
Other	O
vendors	O
have	O
made	O
their	O
software	O
somewhat	O
compatible	O
with	O
SQL	B-Application
Plus	I-Application
script	O
commands	O
or	O
offer	O
a	O
SQL	B-Application
Plus	I-Application
mode	O
of	O
operation	O
.	O
</s>
<s>
Relevant	O
products	O
include	O
TOAD	B-Operating_System
from	O
Quest	O
Software	O
.	O
</s>
<s>
SQL	O
Plus-internal	O
variables	O
,	O
accessible	O
within	O
an	O
SQL	B-Application
Plus	I-Application
session	O
,	O
include	O
:	O
</s>
<s>
Oracle	B-General_Concept
Corporation	O
calls	O
these	O
variables	O
"	O
substitution	O
variables	O
"	O
.	O
</s>
<s>
Programmers	O
can	O
use	O
them	O
anywhere	O
in	O
a	O
SQL	O
or	O
PL/SQL	B-Language
statement	O
or	O
in	O
SQL	B-Application
Plus	I-Application
commands	O
.	O
</s>
<s>
bind	O
variables	O
,	O
prefixed	O
by	O
a	O
colon	O
(	O
 '	O
:	O
'	O
)	O
,	O
which	O
can	O
interact	O
with	O
the	O
PL/SQL	B-Language
environment	O
.	O
</s>
<s>
while	O
running	O
a	O
subsequent	O
SQL	B-Application
Plus	I-Application
command	O
.	O
</s>
<s>
SQL	O
Assistant	O
add-on	O
for	O
SQL	B-Application
Plus	I-Application
Windows	O
version	O
extends	O
SQL	B-Application
Plus	I-Application
with	O
SQL	O
automatic	O
word	O
completion	O
,	O
in-line	O
Oracle	B-General_Concept
SQL	O
Reference	O
,	O
data	O
export/import	O
,	O
code	O
unit	O
testing	O
,	O
data	O
browsing	O
,	O
and	O
code	O
development	O
functions	O
.	O
</s>
<s>
rlwrap	O
does	O
GNU	B-Application
Readline	I-Application
like	O
command	O
completion	O
for	O
SQL	B-Application
Plus	I-Application
on	O
UNIX	B-Application
and	O
Linux	B-Application
.	O
</s>
