#include <db.h> int DB->set_ext_file_dir(DB *db, const char *dir);
The DB->set_ext_file_dir() method sets the
directory where external file data is stored. Use this method if the
database is not opened within an encompassing environment. If an
environment is in use, use
DB_ENV->set_ext_file_dir()
instead.
By default, if this method is not called then external file data is placed in a directory local to the current working directory.
Use DB->get_ext_file_dir() to identify the current storage location used for external file data.
This method configures operations performed using the specified DB handle, not all operations performed on the underlying database.
This method may not be called after DB->open() is called.
Unless otherwise specified, the
DB->set_ext_file_dir()
method returns a non-zero error value on failure and 0 on success.
The DB->set_ext_file_dir()
method may fail and return one of the following non-zero errors:
If the database was opened within a named environment; or if the method was called after DB->open() was called; or if an invalid parameter was specified.