Database.getDatabaseName()

Returns the database's name.

String dbName = myDatabase.getDatabaseName();

Database.getEnvironment()

Returns the Environment that contains this database.

Environment theEnv = myDatabase.getEnvironment();

Database.preload()

Preloads the database into the in-memory cache. Optionally takes a long that identifies the maximum number of bytes to load into the cache. If this parameter is not supplied, the maximum memory usage allowed by the evictor thread is used.

myDatabase.preload(1048576l); // 1024*1024

Environment.getDatabaseNames()

Returns a list of Strings of all the databases contained by the environment.

import java.util.List;
...
List myDbNames = myDbEnv.getDatabaseNames();
for(int i=0; i < myDbNames.size(); i++) {
    System.out.println("Database Name: " + (String)myDbNames.get(i));
}

Environment.removeDatabase()

Deletes the database. The database must be closed when you perform this action on it.

String dbName = myDatabase.getDatabaseName();
myDatabase.close();
myDbEnv.removeDatabase(null, dbName);

Environment.renameDatabase()

Renames the database. The database must be closed when you perform this action on it.

String oldName = myDatabase.getDatabaseName();   
String newName = new String(oldName + ".new", "UTF-8");
myDatabase.close();
myDbEnv.renameDatabase(null, oldName, newName);

Environment.truncateDatabase()

Deletes every record in the database and optionally returns the number of records that were deleted. Note that it is much less expensive to truncate a database without counting the number of records deleted than it is to truncate and count.

int numDiscarded = 
    myEnv.truncate(null,                          // txn handle
                   myDatabase.getDatabaseName(),  // database name
                   true);                         // If true, then the 
                                                  // number of records 
                                                  // deleted are counted.
System.out.println("Discarded " + numDiscarded +
                   " records from database " + 
                   myDatabase.getDatabaseName());