One example of the ORA-20000 conjoined with another set of errors is shown below. Because the error accompanies several other error messages, let us look at some of the more common combinations for the ORA-20000. Instead, they need to resolve the error accompanying an ORA-20000, regardless of whether it is a user-created error or a reserved error. Essentially, when a user sees an ORA-20000, their goal is not necessarily to correct the ORA-20000. The amount of information available on the ORA-20000 is minimal due primarily to its open-endedness. Oracle raises exceptions from the innermost to the outermost error, so when the ORA-20000 is seen in front of a stack of errors, the user knows that the innermost error, or bottom, is the block that can serve as the catalyst. The error is caused when a stored procedure (‘raise_application_error’) is called upon.

It is part of the reserved section of PL/SQL user-defined errors. The ORA-20000 is a generic error that almost always accompanies another error or a stack of errors. The ORA-20000 concerns these type of user-defined errors as well as other errors that are artificially tacked onto a program to facilitate a database manager’s needs. When the error occurs, an exception is raised and users can write routines called ‘exception handlers’ that essentially skip over the procedure to allow continuous running.

The user can have exceptions for items in a database such as “insufficient_budget” that signal when more funding is allocated to a particular budget category than what is owned. However, one of the great aspects of working with PL/SQL in Oracle is that the user can plan for the errors that frequently arise by creating warnings, or exceptions, to signal them. Programs that rely on PL/SQL can often be hit with run-time errors that occur due to faults in design, problems with coding and a number of other issues.

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