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oracle sql update join two tables

gla
gla asked
on
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Last Modified: 2012-06-21
I hava the following update query:
 
UPDATE CUSTOMER_TRANSACTIONS CTC
SET CTC.PERIODID = '2005-2006', CTC.PROCESSID = '200612'
FROM CUSTOMER_TRANSACTIONS_20070716 CTO
WHERE CTO.PERIODID = '2005-2006'
AND CTO.PROCESSID = '200612'
AND CTO.COMPANYID = CTC.COMPANYID
AND CTO.CUSTOMERID = CTC.CUSTOMERID
AND CTO.APPOINTOFCAID = CTC.APPOINTOFCAID
AND CTO.ACCKINDID = CTC.ACCKINDID
AND SUBSTR(CTO.TRNDOCNO, 0, INSTR(CTO.TRNDOCNO, '_')) = SUBSTR(CTC.TRNDOCNO, 0, INSTR(CTC.TRNDOCNO, '_'))
AND CTO.PERIODID <> CTC.PERIODID
AND CTO.PROCESSID <> CTC.PROCESSID;

but not working any idea?
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Guy Hengel [angelIII / a3]Billing Engineer
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gla

Author

Commented:
when I execute the following query the sql statement return 1 row
SELECT CTC.COMPANYID,
CTC.CUSTOMERID,
CTC.APPOINTOFCAID,
CTC.ACCKINDID,
CTC.TRNDATE,
SUBSTR(CTO.TRNDOCNO, 0, INSTR(CTO.TRNDOCNO, '_')) ODOCNO,
CTC.TRNDOCNO,
CTO.TRNDOCNO OTRNDOCNO,
CTO.PERIODID OPERIODID,
CTO.PROCESSID OPROCESSID,
CTC.PERIODID CPERIODID,
CTC.PROCESSID CPROCESSID
FROM CUSTOMER_TRANSACTIONS_20070716 CTO, CUSTOMER_TRANSACTIONS CTC
WHERE CTO.PERIODID = '2005-2006'
AND CTO.PROCESSID = '200612'
AND CTO.COMPANYID = CTC.COMPANYID
AND CTO.CUSTOMERID = CTC.CUSTOMERID
AND CTO.APPOINTOFCAID = CTC.APPOINTOFCAID
AND CTO.APPOINTOFCAID = 104392
AND CTO.ACCKINDID = CTC.ACCKINDID
AND SUBSTR(CTO.TRNDOCNO, 0, INSTR(CTO.TRNDOCNO, '_')) = SUBSTR(CTC.TRNDOCNO, 0, INSTR(CTC.TRNDOCNO, '_'))
AND CTO.PERIODID <> CTC.PERIODID
AND CTO.PROCESSID <> CTC.PROCESSID

when I execute the following update query

UPDATE CUSTOMER_TRANSACTIONS CTC
SET PERIODID = '2005-2006,  
       PROCESSID  = '200612'
WHERE EXISTS (
  SELECT NULL
    FROM CUSTOMER_TRANSACTIONS_20070716 CTO
    WHERE CTO.PERIODID = '2005-2006'
    AND CTO.PROCESSID = '200612'
    AND CTO.COMPANYID = CTC.COMPANYID
    AND CTO.CUSTOMERID = CTC.CUSTOMERID
    AND CTO.APPOINTOFCAID = CTC.APPOINTOFCAID
      AND CTO.APPOINTOFCAID = 104392
    AND CTO.ACCKINDID = CTC.ACCKINDID
   AND SUBSTR(CTO.TRNDOCNO, 0, INSTR(CTO.TRNDOCNO, '_')) = SUBSTR(CTC.TRNDOCNO, 0, INSTR(CTC.TRNDOCNO, '_'))
   AND CTO.PERIODID <> CTC.PERIODID
   AND CTO.PROCESSID <> CTC.PROCESSID
);

that run for long time and not end after 20'. This is  normal?

Commented:
queries probably has different execution plans. if you have computed statitics probably select uses some hash join, update nested loop.
isn't here some locks ?

you can check with adding FOR UPDATE NOWAIT into your select statement. if it fires ora-54 someoe else has locked rows you are going to update
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