Max Columns in a SQL Select

SQL Guru's,

Does anyone know what is the Column Limit in a SQL
Query in Oracle RDB version 7.1?  

I've about 200 columns in my SQL query.  Each column
is a computed column -- Case when a = b Then c Else 0
End.

It gives me a runtime error -- abnormal program
termination -- upon execution.  

Thanks a lot in advance.

    
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