Re: archiving data

Sai,

Where did you find that limitation of 64K? Although I admit I have not used a long column of that size, but according to the fine manuals, the max size of LONG column copied is 2 GB; actually 2,000,000,000 bytes, not 64K. You have to specify the size of long in your session using SET LONG 2000000000 before attempting the copy command.

Please let us know where you found that 64K limitation. The ohter thin you have to consider is that COPY is being depecrated in 10i, or whatever it will be called; but then again, I hope your application will have ceased using LONGs.

Arup Nanda
www.proligence.com

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Saturday, May 31, 2003 6:29 PM

> but i think there is a sqlplus limitation of 64k and
> any data longet than 64k will get truncated in this
> case too..
>
> correct me if i am wrong,even if u set long to a very
> high value,data more than 64k in lenght will get
> truncated .
>
> sai
>
> --- Arup Nanda <orarup_at_hotmail.com> wrote:
> > For situations like this you have the COPY command
> > of SQL*Plus.
> >
> > Remember, it's a SQL*Plus comamnd like set, btitle,
> > etc. not a sql command
> > you can embed inside a pl/sql block. You could
> > create a table similar in
> > structure to main table and then polulate the data
> >
> > SQL> SET LONG 999999
> > -- this is neededto set the max size of the long
> > data; otherwise it gets
> > truncated.
> >
> > COPY FROM SCHEMA_NAME/PASSWORD_at_CONNECTSTRING -
> > APPEND HOLDINGTABLE -
> > USING SELECT * FROM MAINTABLE WHERE DATE_COL <
> > SYSDATE - 12*30
> >
> > Note the use of hyphens after the lines. SQL*PLus
> > commands are expected to
> > be in one line. Since I am continuing on to the
> > next, I used the
> > continuation character hyphen.
> >
> > This by default commits after all the rows are
> > loaded. You can control the
> > commit frequency by specifying two parameters
> >
> > -- sets 100 records per array
> > SET ARRAYSIZE 100
> > -- sets a commit to occur after every 200 batches,
> > or 20,000 records
> > SET COPYCOMMIT 200
> >
> > This process is fairly simple and can be easily
> > automated using a shell
> > script. Any error raised by the sql block can be
> > checked.
> >
> > Hope this helps.
> >
> > Arup Nanda
> > www.proligence.com
> >
> >
> >
> > ----- Original Message -----
> > To: "Multiple recipients of list ORACLE-L"
> > <ORACLE-L_at_fatcity.com>
> > Sent: Friday, May 30, 2003 7:04 PM
> >
> >
> > > hi there is this project that is going on for
> > > archiving old data from oltp system that is older
> > than
> > > 12 months and then purging them in the main db.
> > >
> > > the tables that are to be archived are with long
> > rows.
> > > they cannot be converted to lobs since this is a
> > third
> > > party application. here is where the problem lies.
> > > oracle support when contacted says either mv to
> > lobs
> > > to make this move easier or use oci ..blah.blah..
> > to
> > > get this working if you want to remain in longs.
> > >
> > > there are some options i have though about:
> > > 1. export /import ..but should make this highly
> > > automated since the main db and archival db will
> > be on
> > > different hosts, this will not be monitored and
> > import
> > > has to go thru w/o issues etc.
> > > 2. create snapshot - but they dont work with
> > > long..hence not an option.
> > > 3. getting sqlldr to work but i think it has that
> > 32k
> > > column size limitation.
> > >
> > >
> > > so can you please suggest me whetehr there is
> > > something else i can do or option 1 is the best
> > given
> > > the environment. the oracle is 8.1.7.2 on sun 2.8.
> > >
> > > thanks
> > > sai
> > > --
> > > Please see the official ORACLE-L FAQ:
> > http://www.orafaq.net
> > > --
> > > Author: Sai Selvaganesan
> > > INET: ssaisundar_at_sbcglobal.net
> > >
> > > Fat City Network Services -- 858-538-5051
> > http://www.fatcity.com
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Sai Selvaganesan
> INET: ssaisundar_at_sbcglobal.net
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Arup Nanda
  INET: orarup_at_hotmail.com

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