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How to Import dump file with default value for single column?

 
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Top Forums UNIX for Dummies Questions & Answers How to Import dump file with default value for single column?
# 1  
Old 06-03-2013
Lightbulb How to Import dump file with default value for single column?
Hi,
I need to import more than 250K of records to another Database(Oracle).But I want particular column value to be changed in the destination table. Is it possible to do this during export or import process with out modifying data from original table.I do not want to run Update manually.

Thanks in advance Smilie
# 2  
Old 06-03-2013
AFAIK there is no such option in export or import utilities that supports modifying column values.

These utilities are used if your data objects reside on platforms with different hardware and software configurations.

If that is not the case you can use COPY command in which you can specify modified value in SELECT statement.
# 3  
Old 06-03-2013
Doesn't Oracle have a replace() function that does exactly that?
# 4  
Old 06-04-2013
Quote:
Originally Posted by Yoda
AFAIK there is no such option in export or import utilities that supports modifying column values.

These utilities are used if your data objects reside on platforms with different hardware and software configurations.

If that is not the case you can use COPY command in which you can specify modified value inSELECT statement.
Yoda and verdepollo thanks for ur reply Smilie
But COPY command will work DB within the service ID.But I have DB as 'scott/tiger@aaaa' and 'scott/tiger@bbbb'.I dont want to run the update query manually.it will take so much time to update 250K of records.I need to do the same import/export process for 25 crore of records and this will take few days to complete.
# 5  
Old 06-04-2013
Not 100% sure but data pump utility might help here (expdp & impdp)
# 6  
Old 06-04-2013
Quote:
Originally Posted by vidyadhar85
Not 100% sure but data pump utility might help here (expdp & impdp)
Hi vidyadhar85,
Can you provide the example code to do it
# 7  
Old 06-04-2013
As both are oracle-databases a database link can be used to solve this, given you have the privileges inside the DB to create it.
If you have the privileges in bbbb you can do something like this after you connect:
Code:
create database link aaaa connect to scott identified by tiger using 'aaaa';
insert into your_table (your,field,list)
       select your,field,replace(list,'what','with')
         from your_table@aaaa;
drop database link aaaa;

 
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