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ORA-28500 with database link

Brian Peasland EXPERT RESPONSE FROM: Brian Peasland

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QUESTION POSED ON: 23 August 2006
I created a database link from Oracle 10g to MS SQL Server. It works. I can select from tables on SQL Server. In one table there is a column name larger than 30 characters. I don't select this column but I get this error: "ORA-28500: Attempt to access a column Address_OutputMedium_Caption_ID with unsupported name length (greater than 30 characters)." I can't change the name of this column. What can I do? Thank you very much for your help.


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You cannot force Oracle to query any table that has a column name longer than 30 characters, even if that table is stored in a database system that allows longer column names, like SQL Server. About the best you can do is to create a view in SQL Server that queries the table. This view would change the column name.

CREATE VIEW my_table_view (column1,column2,
   column3_less_than_30)
AS SELECT column1,column2,column3_is_much_much_much
   _much_much_longer_than_30_characters
FROM my_table;
In Oracle, you query the view, which pulls data from the table.




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