public void rename(String file, String database, String newname, int flags)
throws DbException, FileNotFoundException;
The Db.rename method renames the database specified by the
file and database arguments to newname. If no
database is specified, the underlying file represented by
file is renamed, incidentally renaming all databases that it
Applications should not rename databases that are currently in use. If
an underlying file is being renamed and logging is currently enabled in
the database environment, no database in the file may be open when the
Db.rename method is called. In particular, some architectures do
not permit renaming files with open handles. On these architectures,
attempts to rename databases that are currently in use by any thread of
control in the system will fail.
The flags parameter is currently unused, and must be set to 0.
The Db handle may not be accessed again after Db.rename is
called, regardless of its return.
The Db.rename method throws an exception that encapsulates a non-zero error value on
- If a dbenv argument to db_create was specified, the
environment variable DB_HOME may be used as the path of the
database environment home.
Db.rename is affected by any database directory specified using the
DbEnv.set_data_dir method, or by setting the "set_data_dir" string
in the environment's DB_CONFIG file.
The Db.rename method may fail and throw an exception encapsulating a non-zero error for the following conditions:
- An invalid flag value or parameter was specified.
A database in the file is currently open.
Called after Db.open was called.
If the file or directory does not exist, the Db.rename method will
throw a FileNotFoundException exception.
The Db.rename method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods.
If a catastrophic error has occurred, the Db.rename method may fail and
throw a DbRunRecoveryException,
in which case all subsequent Berkeley DB calls will fail in the same way.
Databases and Related Methods
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