Berkeley DB

Run-time Error Information

Normally, when an error occurs in the Berkeley DB library, an integer value (either a Berkeley DB-specific value or a system errno value) is returned by the function. In some cases, however, this value may be insufficient to completely describe the cause of the error, especially during initial application debugging.

There are four interfaces intended to provide applications with additional run-time error information: DBENV→set_errcall, DBENVset_errfile, DBENV→set_errpfx, and DBENVset_verbose.

If the environment is configured with these interfaces, many Berkeley DB errors will result in additional information being written to a file or passed as an argument to an application function.

The Berkeley DB error-reporting ...