3. Never hard-code an Oracle error number.
You can (and should!) name those unnamed ORA errors (never hard-code an error number).
Oracle Database pre-defines a number of exceptions for common ORA errors, such as NO_DATA_FOUND and VALUE_ERROR. But there a whole lot more errors for which there is no pre-defined name. And some of these can be encountered quite often in code. The key thing for developers is to avoid hard-coding these error numbers in your code. Instead, use the EXCEPTION_INIT pragma to assign a name for that error code, and then handle it by name.
Related blog post: http://stevenfeuersteinonplsql.blogsp...
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Practically Perfect PL/SQL with Steven Feuerstein
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