DB->set_errfile(DB *db, FILE *errfile);
When an error occurs in the Berkeley DB library, a Berkeley DB error or an error
return value is returned by the function. In some cases, however,
the errno value may be insufficient to completely describe
the cause of the error especially during initial application debugging.
The DB_ENV->set_errfile and DB->set_errfile methods are used to
enhance the mechanism for reporting error messages to the application
by setting a C library FILE * to be used for displaying additional Berkeley DB
error messages. In some cases, when an error occurs, Berkeley DB will output
an additional error message to the specified file reference.
The error message will consist of the prefix string and a colon
(":") (if a prefix string was previously specified using
DB->set_errpfx or DB_ENV->set_errpfx), an error string, and
a trailing <newline> character.
This error logging enhancement does not slow performance or significantly
increase application size, and may be run during normal operation as well
as during application debugging.
For DB handles opened inside of Berkeley DB environments, calling the
DB->set_errfile method affects the entire environment and is equivalent to calling
the DB_ENV->set_errfile method.
The DB->set_errfile interface may be called at any time during the life of
Databases and Related Methods
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