Indexes question

From: Andrey Bronfin <bronfin_at_VisualTop.com>
Date: Mon, 3 Jul 2000 11:22:37 +0200
Message-Id: <10547.111089@fatcity.com>

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Dear DBAs !
I'm having a very strange situation here , so i just must have your help = .

There is a table URLS , which has a column URL of type varchar2(740) . I have a single-column index URL_IX defined on that column . Now , by querying the DBA_EXTENTs , i see that the index URL_IX occupies = more space ( bytes , blocks , extents ) than the table itself . Is it a normal situation ?
Is it effective to define such an index on a varchar2 (740) column and = search it ?
Is there a more effective way to index such a column and to optimize the = access to it ?

Thanks a lot in advance !

Andrey Bronfin
VisualTop.com
+972-3-5275757.

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<DIV><FONT face=3DArial size=3D2>Dear DBAs !</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I'm having a very strange situation =
here , so i=20
just must have your help .</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>There is a table URLS , which has a =
column URL of=20
type varchar2(740) .</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>I have a single-column index URL_IX =
defined on that=20
column .</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Now , by querying the DBA_EXTENTs , i =
see that the=20
index URL_IX occupies more space ( bytes , blocks , extents ) than the = table=20
itself .</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Is it a normal situation ?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Is it effective to define such an index =
on a=20
varchar2 (740) column and search it ?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Is there a more effective way to index =
such a=20
column and to optimize the access to it ?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks a lot in advance !</FONT></DIV>
<DIV><FONT face=3DArial size=3D2><BR>Andrey=20
Bronfin<BR>VisualTop.com<BR>+972-3-5275757.</FONT></DIV>
<DIV> </DIV>
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Received on Mon Jul 03 2000 - 04:22:37 CDT