RE: Conversion from CLOB to RAW

Thanks Dennis,

I'm meeting with them this morning at 10 to discuss this in more detail now that I have some feedback from the list, all of which I appreciate. I don't believe they are searching the information, but will know shortly.

Regards,

Bill Burke
"The Kinder and Gentler DBA"
IOUG University Master Class Faculty 2001-2002 "iDBA Management, High Performance Infrastructure and HA" IOUG Board of Directors 2000-2002
ODTUG Board of Directors 1996-2000
www.OracleGuru.com
www.KBMotorsports.biz

-----Original Message-----
Sent: Monday, January 13, 2003 2:44 PM
To: Multiple recipients of list ORACLE-L

Bill - Will you need to search for information that will be compressed? If yes, then performance could be really, really bad.

Dennis Williams
DBA, 40%OCP
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
Sent: Monday, January 13, 2003 2:07 PM
To: Multiple recipients of list ORACLE-L

I wasn't. I actually am still trying to look at the varchar2. The downside is the huge amount of data they want to keep in a compressed format hence the RAW or BLOB format.

Regards,

Bill Burke
"The Kinder and Gentler DBA"
IOUG University Master Class Faculty 2001-2002 "iDBA Management, High Performance Infrastructure and HA" IOUG Board of Directors 2000-2002
ODTUG Board of Directors 1996-2000
www.OracleGuru.com
www.KBMotorsports.biz

-----Original Message-----
Sent: Sunday, January 12, 2003 12:34 AM
To: Multiple recipients of list ORACLE-L

Bill,

If the data length is less than 2K, why not use varchar2? You get all the functionality like substr(), instr(), like etc. I'm not sure why you are leaning towards RAW, when the type you are storing is of character based.

HTH. Arup
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Saturday, January 11, 2003 1:33 PM

> The amount of data being stored is fairly significant @60G of xml
> transaction data. The developers want to apply a compression routine to
the
> xml string which will save about 70% of the space currently in use. BLOB
> was my original recommendation, they were pushing to go RAW instead.
We've
> only got a couple of CLOB's out there, but they are taking up huge amounts
> of storage. On the overkill note, most all of the XML has been parsed to
> less than 2K in length so one of my thoughts was we had introduced LOB
> functionality without really needing it.
>
> The other aside to this is we will definately need to partition the data
> when we do the conversion as it currently resides in a traditional table
as
> a CLOB.
>
> Regards,
>
> Bill Burke
> "The Kinder and Gentler DBA"
> IOUG University Master Class Faculty 2001-2002
> "iDBA Management, High Performance Infrastructure and HA"
> IOUG Board of Directors 2000-2002
> ODTUG Board of Directors 1996-2000
> www.OracleGuru.com
> www.KBMotorsports.biz
>
>
>
> -----Original Message-----
> [mailto:JApplewhite_at_austin.isd.tenet.edu]
> Sent: Friday, January 10, 2003 4:24 PM
> To: Multiple recipients of list ORACLE-L
>
>
>
> Bill,
>
> I agree with Michael. You've already got the data in a "suitable
> datatype". Why move it to a cumbersome, soon-to-be-obsolete datatype?
You
> can use DBMS_LOB functionality on LOBs, not on Raw.
>
> I'd be so happy if the couple dozen tables in our 3rd party Student
> Information system that have Long or Long Raw columns had CLOB or BLOB
> columns instead. It would make converting them to partitioned tables much
> easier.
>
> I definitely vote to keep your CLOBs.
>
> Jack C. Applewhite
> Database Administrator
> Austin Independent School District
> Austin, Texas
> 512.414.9715 (wk)
> 512.935.5929 (pager)
> JApplewhite_at_austin.isd.tenet.edu
>
>
>
>
>
> Michael Fontana
>
> <mfontana_at_verio.n To: Multiple
recipients
> of list ORACLE-L
> et> <ORACLE-L_at_fatcity.com>
>
> Sent by: cc:
>
> root_at_fatcity.com Subject: Re: Conversion
from
> CLOB to RAW
>
>
>
>
> 01/10/2003 02:15
>
> PM
>
> Please respond to
>
> ORACLE-L
>
>
>
>
>
>
>
>
>
> At 11:30 AM 1/10/2003 -0800, Burke, William F (Bill) wrote:
> Here's where I get to ask the most likely simple question.
>
> I've inherited a database where it was built using a CLOB to hold
XML
> data
> but we have now determined that was total overkill and want to move
> it to a
> RAW column or other suitable datatype.
>
> Looking for conversion issues or other alternatives.
>
>
> Since Oracle is moving us away from LONG and RAW datatypes, I assume
> you want to convert from CLOB to BLOB? BLOB is probably more
> storage-efficient,
> but since XML is made up of character data, I don't really understand the
> issue with
> keeping it a CLOB.
>
> What do you mean by overkill?
>
>
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author:
> INET: JApplewhite_at_austin.isd.tenet.edu
>
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