Multiple Updates on Oracle Table

I am performing multiple updates on an Oracle table that has 4 million records. Currently I am performing the updates serially like mentioned below:
update test set zone='2' where zone='002';
update test set zone='2' where zone='102';
update test set zone='2' where zone='132';
update test set zone='2' where zone='2';
update test set zone='2' where zone='202';
update test set zone='2' where zone='242';
update test set zone='2' where zone='302';
update test set zone='3' where zone='003';
update test set zone='3' where zone='103';
update test set zone='3' where zone='133';
update test set zone='3' where zone='203';
update test set zone='3' where zone='243';
update test set zone='3' where zone='3';
update test set zone='3' where zone='303';
update test set zone='4' where zone='004';
update test set zone='4' where zone='104';
update test set zone='4' where zone='134';
update test set zone='4' where zone='204';
update test set zone='4' where zone='244';
update test set zone='4' where zone='304';
update test set zone='4' where zone='4';
update test set zone='5' where zone='005';
update test set zone='5' where zone='105';
update test set zone='5' where zone='135';
update test set zone='5' where zone='205';
update test set zone='5' where zone='245';
update test set zone='5' where zone='305';
update test set zone='5' where zone='5';
update test set zone='6' where zone='006';
update test set zone='6' where zone='106';
update test set zone='6' where zone='136';
update test set zone='6' where zone='206';
update test set zone='6' where zone='246';
update test set zone='6' where zone='306';
update test set zone='6' where zone='6';
update test set zone='7' where zone='007';
update test set zone='7' where zone='107';
update test set zone='7' where zone='137';
update test set zone='7' where zone='207';
update test set zone='7' where zone='247';
update test set zone='7' where zone='307';
update test set zone='7' where zone='7';
update test set zone='8' where zone='008';
update test set zone='8' where zone='108';
update test set zone='8' where zone='138';
update test set zone='8' where zone='208';
update test set zone='8' where zone='248';
update test set zone='8' where zone='308';
update test set zone='8' where zone='8';
update test set zone='2' where zone='02';
update test set zone='3' where zone='03';
update test set zone='4' where zone='04';
update test set zone='5' where zone='05';
update test set zone='6' where zone='06';
update test set zone='7' where zone='07';
update test set zone='8' where zone='08';
update test set zone='44' where zone='044';
update test set zone='44' where zone='224';
update test set zone='45' where zone='045';
update test set zone='46' where zone='046';
update test set zone='46' where zone='226';
update test set zone=null where zone='0';
update test set zone=null where zone='09';
update test set zone=null where zone='10';
update test set zone=null where zone='11';
update test set zone=null where zone='12';
update test set zone=null where zone='A ';
update test set zone=null where zone=' ';
How can I perform these updates more effeciently and faster? Is there anything I could do to fine tune these updates?
Thanks

is zone varchar2(3) ?
Verify if following Uppercase updates replace your previous updates
update test set zone='2' where zone='002';
update test set zone='2' where zone='102';
update test set zone='2' where zone='132';
update test set zone='2' where zone='202';
update test set zone='2' where zone='242';
update test set zone='2' where zone='302';
update test set zone='3' where zone='003';
update test set zone='3' where zone='103';
update test set zone='3' where zone='133';
update test set zone='3' where zone='203';
update test set zone='3' where zone='243';
update test set zone='3' where zone='303';
update test set zone='4' where zone='004';
update test set zone='4' where zone='104';
update test set zone='4' where zone='134';
update test set zone='4' where zone='204';
update test set zone='4' where zone='244';
update test set zone='4' where zone='304';
update test set zone='5' where zone='005';
update test set zone='5' where zone='105';
update test set zone='5' where zone='135';
update test set zone='5' where zone='205';
update test set zone='5' where zone='245';
update test set zone='5' where zone='305';
update test set zone='6' where zone='006';
update test set zone='6' where zone='106';
update test set zone='6' where zone='136';
update test set zone='6' where zone='206';
update test set zone='6' where zone='246';
update test set zone='6' where zone='306';
update test set zone='7' where zone='007';
update test set zone='7' where zone='107';
update test set zone='7' where zone='137';
update test set zone='7' where zone='207';
update test set zone='7' where zone='247';
update test set zone='7' where zone='307';
update test set zone='8' where zone='008';
update test set zone='8' where zone='108';
update test set zone='8' where zone='138';
update test set zone='8' where zone='208';
update test set zone='8' where zone='248';
update test set zone='8' where zone='308';
UPDATE TEST SET ZONE=SUBSTR(ZONE,3) WHERE SUBSTR(ZONE,1,2) IN ('10','13','20','24','30')
update test set zone='2' where zone='2';
update test set zone='3' where zone='3';
update test set zone='4' where zone='4';
update test set zone='5' where zone='5';
update test set zone='6' where zone='6';
update test set zone='7' where zone='7';
update test set zone='8' where zone='8';
UPDATE TEST SET ZONE=ZONE WHERE ZONE IN ('2','3','4','5','6','7','8') -- SAME VALUE why update ???
update test set zone='2' where zone='02';
update test set zone='3' where zone='03';
update test set zone='4' where zone='04';
update test set zone='5' where zone='05';
update test set zone='6' where zone='06';
update test set zone='7' where zone='07';
UPDATE TEST SET ZONE=SUBSTR(ZONE,2) WHERE SUBSTR(ZONE,1,1) = '0'
update test set zone='44' where zone='044';
update test set zone='44' where zone='224';
UPDATE TEST SET ZONE='44' WHERE ZONE IN ('044','224')
update test set zone='45' where zone='045';
UPDATE TEST SET ZONE='45' WHERE ZONE='045';
update test set zone='46' where zone='046';
update test set zone='46' where zone='226';
UPDATE TEST SET ZONE='46' WHERE ZONE IN ('046','226')
update test set zone=null where zone='0';
update test set zone=null where zone='09';
update test set zone=null where zone='10';
update test set zone=null where zone='11';
update test set zone=null where zone='12';
update test set zone=null where zone='A ';
update test set zone=null where zone=' ';
UPDATE TEST SET ZONE=null WHERE ZONE IN ('0','09','10','11','12','A ',' ')if so build a single update
update test
   set zone = case when SUBSTR(ZONE,1,2) IN ('10','13','20','24','30') then SUBSTR(ZONE,3)
                   when SUBSTR(ZONE,1,1) = '0'                         then SUBSTR(ZONE,2)
                   when ZONE IN ('044','224')                          then '44'
                   when ZONE='045'                                     then '45'
                   when ZONE IN ('046','226')                          then '46'
                   when ZONE IN ('0','09','10','11','12','A ',' ')     then null
              endonly you know all your zone values (very sensitive to zone addition) add length(zone) conditions if necessary
Regards
Etbin

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Execution Plan
Plan hash value: 1980564716
| Id | Operation          | Name   | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | UPDATE STATEMENT   |        |   218K| 2778K| 7415   (2)| 00:01:29 |
|   1 | UPDATE            | proc_log |       |       |            |          |
|* 2 |   TABLE ACCESS FULL| proc_log |   218K| 2778K| 7415   (2)| 00:01:29 |
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        131 recursive calls
     768984 db block gets
      38560 consistent gets
      42626 physical reads
   78612540 redo size
        827 bytes sent via SQL*Net to client
        761 bytes received via SQL*Net from client
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          1 sorts (memory)
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Plan hash value: 1980564716
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     491360 consistent gets
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183447664 redo size
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        855 bytes received via SQL*Net from client
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|   0 | UPDATE STATEMENT   |        |   218K| 2778K| 7415   (2)| 00:01:29 |
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       8012 physical reads
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        762 bytes received via SQL*Net from client
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Hi,
Normally for any JDBC scenario, the records must be passed in a single shot. If one of them fails, all record would be rollbacked.
If you pass record by record, the performance would be drastic as each time it will open a LUW and hit the database.
It is better to pass all records in single shot.
It is better to put 1.unbounded else if u loop the internal table the execution time from proxy to XI will be happening record by record which is not advisable
Regards,
Krish
Edited by: Krish on Sep 18, 2008 7:12 PM

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We have a system that can talk to only Oracle.
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Similarly for every query on the View of oracle table we want to query informix database and fetch the records from there.
We want to use Oracle as a medium to access Informix.
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You can use the Transparent Gateway for Informix to access Informix from an Oracle environment. The gateway makes the Informix database look like a remote Oracle database.
You can take a look at the gateways page on OTN for more information on this. http://otn.oracle.com/products/gateways/content.html
Look at the Certification matrix to ensure that you are using a certified configuration.

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In my assignment,I need your help. I'm wondering how can I update all the items of my HTML itembox ,defined in one of the jsp page, to Oracle table.
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hsperhar wrote:
Thanks ,in that I can deal with the servlet programming and collecting and updating the data in my oracle tables. But how would I collect the names/values of all the items of HTML itembox in my servlet/JSP, so that later I can update my oracle table with those string values.Method request.getParameter(String) will catch the selected items only of the itembox. How can I force the form to pass all the names of items of itembox to servlet. You need to pass them separately. But why do you need to do this? You already know at the server side which options are all in the dropdown. Simply because you couldn't have printed it to the response otherwise.
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http://download.oracle.com/docs/cd/B19306_01/server.102/b14232/toc.htm
http://download.oracle.com/docs/cd/B19306_01/server.102/b14232/majfeat.htm#sthref74
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http://download.oracle.com/docs/cd/B19306_01/server.102/b14228/toc.htm
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