diff --git a/bin/fr/devinsy/sikevadb/FileSikevaDB.class b/bin/fr/devinsy/sikevadb/FileSikevaDB.class
index 1660bde..16c52f9 100644
Binary files a/bin/fr/devinsy/sikevadb/FileSikevaDB.class and b/bin/fr/devinsy/sikevadb/FileSikevaDB.class differ
diff --git a/bin/fr/devinsy/sikevadb/SQLSikevaDB.class b/bin/fr/devinsy/sikevadb/SQLSikevaDB.class
index 7b167eb..22db348 100644
Binary files a/bin/fr/devinsy/sikevadb/SQLSikevaDB.class and b/bin/fr/devinsy/sikevadb/SQLSikevaDB.class differ
diff --git a/bin/fr/devinsy/sikevadb/SikevaDB.class b/bin/fr/devinsy/sikevadb/SikevaDB.class
index b83d6c4..613bc2e 100644
Binary files a/bin/fr/devinsy/sikevadb/SikevaDB.class and b/bin/fr/devinsy/sikevadb/SikevaDB.class differ
diff --git a/src/fr/devinsy/sikevadb/FileSikevaDB.java b/src/fr/devinsy/sikevadb/FileSikevaDB.java
index 7b9be1d..79e2701 100644
--- a/src/fr/devinsy/sikevadb/FileSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/FileSikevaDB.java
@@ -255,6 +255,24 @@ public class FileSikevaDB implements SikevaDB {
 		return 0;
 	}
 
+	@Override
+	public long memorySizeOfArchive() throws Exception {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	@Override
+	public long memorySizeOfArchive(final String key) throws Exception {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	@Override
+	public long memorySizeOfArchive(final String key, final String subkey) throws Exception {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
 	@Override
 	public void open() {
 		// TODO Auto-generated method stub
diff --git a/src/fr/devinsy/sikevadb/SQLSikevaDB.java b/src/fr/devinsy/sikevadb/SQLSikevaDB.java
index bfe90c2..9e4fd35 100644
--- a/src/fr/devinsy/sikevadb/SQLSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/SQLSikevaDB.java
@@ -1391,7 +1391,7 @@ public class SQLSikevaDB implements SikevaDB {
 		try {
 			connection = getConnection();
 			connection.setAutoCommit(true);
-			statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE TOPKEY=?");
+			statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE ARCHIVE_DATE IS NULL AND TOPKEY=? AND SUBKEY IS NULL");
 			statement.setString(1, key);
 			resultSet = statement.executeQuery();
 
@@ -1424,7 +1424,99 @@ public class SQLSikevaDB implements SikevaDB {
 			try {
 				connection = getConnection();
 				connection.setAutoCommit(true);
-				statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE TOPKEY=? AND SUBKEY=?");
+				statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE ARCHIVE_DATE IS NULL AND TOPKEY=? AND SUBKEY=?");
+				statement.setString(1, key);
+				statement.setString(2, subkey);
+				resultSet = statement.executeQuery();
+
+				resultSet.next();
+				result = resultSet.getLong(1);
+
+			} finally {
+				close(connection, statement, resultSet);
+			}
+		}
+
+		//
+		return result;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public long memorySizeOfArchive() throws SQLException {
+		long result;
+
+		//
+		Connection connection = null;
+		PreparedStatement statement = null;
+		ResultSet resultSet = null;
+		try {
+			connection = getConnection();
+			connection.setAutoCommit(true);
+			statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE ARCHIVE_DATE IS NOT NULL");
+			resultSet = statement.executeQuery();
+
+			resultSet.next();
+			result = resultSet.getLong(1);
+
+		} finally {
+			close(connection, statement, resultSet);
+		}
+
+		//
+		return result;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public long memorySizeOfArchive(final String key) throws SQLException {
+		long result;
+
+		//
+		Connection connection = null;
+		PreparedStatement statement = null;
+		ResultSet resultSet = null;
+		try {
+			connection = getConnection();
+			connection.setAutoCommit(true);
+			statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE ARCHIVE_DATE IS NOT NULL AND TOPKEY=? AND SUBKEY IS NULL");
+			statement.setString(1, key);
+			resultSet = statement.executeQuery();
+
+			resultSet.next();
+			result = resultSet.getLong(1);
+
+		} finally {
+			close(connection, statement, resultSet);
+		}
+
+		//
+		return result;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public long memorySizeOfArchive(final String key, final String subkey) throws Exception {
+		long result;
+
+		//
+		if (subkey == null) {
+			result = memorySize(key);
+		} else {
+			//
+			Connection connection = null;
+			PreparedStatement statement = null;
+			ResultSet resultSet = null;
+			try {
+				connection = getConnection();
+				connection.setAutoCommit(true);
+				statement = connection.prepareStatement("SELECT SUM(SIZE) FROM elements WHERE ARCHIVE_DATE IS NOT NULL AND TOPKEY=? AND SUBKEY=?");
 				statement.setString(1, key);
 				statement.setString(2, subkey);
 				resultSet = statement.executeQuery();
diff --git a/src/fr/devinsy/sikevadb/SikevaDB.java b/src/fr/devinsy/sikevadb/SikevaDB.java
index ce74464..83a5dda 100644
--- a/src/fr/devinsy/sikevadb/SikevaDB.java
+++ b/src/fr/devinsy/sikevadb/SikevaDB.java
@@ -102,6 +102,12 @@ public interface SikevaDB {
 
 	public long memorySize(String key, String subkey) throws Exception;
 
+	public long memorySizeOfArchive() throws Exception;
+
+	long memorySizeOfArchive(String key) throws Exception;
+
+	long memorySizeOfArchive(String key, String subkey) throws Exception;
+
 	public void open() throws Exception;
 
 	public void put(Element element) throws Exception;
diff --git a/test/fr/devinsy/sikevadb/SQLSikevaDBTest.java b/test/fr/devinsy/sikevadb/SQLSikevaDBTest.java
index cef357e..a36c481 100644
--- a/test/fr/devinsy/sikevadb/SQLSikevaDBTest.java
+++ b/test/fr/devinsy/sikevadb/SQLSikevaDBTest.java
@@ -16,7 +16,6 @@ import org.junit.Test;
 import fr.devinsy.util.StringList;
 
 /**
- * ?profileSQL=true
  * 
  * @author Christian P. Momon
  */
@@ -47,6 +46,7 @@ public class SQLSikevaDBTest {
 		BasicConfigurator.configure();
 		Logger.getRootLogger().setLevel(Level.ERROR);
 
+		// Add ?profileSQL=true to generate huge logs.
 		this.database = new SQLSikevaDB("com.mysql.jdbc.Driver", "jdbc:mysql://localhost:3306/sikevadb-test", "sikevadb-test", "12345678");
 		this.database.open();
 	}
@@ -123,6 +123,108 @@ public class SQLSikevaDBTest {
 		logger.debug("===== test done.");
 	}
 
+	/**
+	 * @throws Exception
+	 * 
+	 */
+	@Test
+	public void testGeKeyse01() throws Exception {
+		//
+		logger.debug("===== test starting...");
+
+		database.clearDatabase();
+
+		database.put("alpha01", "1234567890");
+		database.put("alpha01", "qlskjfmlqj");
+		database.put("alpha02", "qlskjfmlqj");
+		database.put("alpha03", "qlskjfmlqj");
+		database.put("alpha04", "qlskjfmlqj");
+		database.put("alpha05", "qlskjfmlqj");
+		database.put("alpha01", "bravo1", "1234567890");
+		database.put("alpha01", "bravo1", "qlskjfmlqj");
+		database.put("alpha01", "bravo2", "qlskjfmlqj");
+		database.put("alpha01", "bravo3", "qlskjfmlqj");
+		database.put("alpha01", "bravo4", "qlskjfmlqj");
+		database.put("alpha01", "bravo5", "qlskjfmlqj");
+
+		Assert.assertEquals(0, database.getSubkeys("none").size());
+
+		//
+		logger.debug("===== test done.");
+	}
+
+	/**
+	 * @throws Exception
+	 * 
+	 */
+	@Test
+	public void testGeKeyse02() throws Exception {
+		//
+		logger.debug("===== test starting...");
+
+		database.clearDatabase();
+
+		database.put("alpha01", "1234567890");
+		database.put("alpha01", "qlskjfmlqj");
+		database.put("alpha02", "qlskjfmlqj");
+		database.put("alpha03", "qlskjfmlqj");
+		database.put("alpha04", "qlskjfmlqj");
+		database.put("alpha05", "qlskjfmlqj");
+		database.put("alpha01", "bravo1", "1234567890");
+		database.put("alpha01", "bravo1", "qlskjfmlqj");
+		database.put("alpha01", "bravo2", "qlskjfmlqj");
+		database.put("alpha01", "bravo3", "qlskjfmlqj");
+		database.put("alpha01", "bravo4", "qlskjfmlqj");
+		database.put("alpha01", "bravo5", "qlskjfmlqj");
+
+		StringList keys = database.getKeys();
+
+		Assert.assertEquals(5, keys.size());
+		Assert.assertTrue(keys.contains("alpha03"));
+		Assert.assertEquals(1, database.getSubkeys("alpha03").size());
+
+		//
+		logger.debug("===== test done.");
+	}
+
+	/**
+	 * @throws Exception
+	 * 
+	 */
+	@Test
+	public void testMemorySize01() throws Exception {
+		//
+		logger.debug("===== test starting...");
+
+		database.clearDatabase();
+
+		Assert.assertEquals(0, database.memorySize());
+
+		database.put("alpha01", "1234567890");
+		database.put("alpha01", "qlskjfmlqj");
+		database.put("alpha02", "qlskjfmlqj");
+		database.put("alpha03", "qlskjfmlqj");
+		database.put("alpha04", "qlskjfmlqj");
+		database.put("alpha05", "qlskjfmlqj");
+		database.put("alpha01", "bravo1", "1234567890");
+		database.put("alpha01", "bravo1", "qlskjfmlqj");
+		database.put("alpha01", "bravo2", "qlskjfmlqj");
+		database.put("alpha01", "bravo3", "qlskjfmlqj");
+		database.put("alpha01", "bravo4", "qlskjfmlqj");
+		database.put("alpha01", "bravo5", "qlskjfmlqj");
+
+		Assert.assertEquals(120, database.memorySize());
+		Assert.assertEquals(10, database.memorySize("alpha01"));
+		Assert.assertEquals(10, database.memorySize("alpha01", "bravo1"));
+
+		database.clearDatabase();
+
+		Assert.assertEquals(0, database.memorySize());
+
+		//
+		logger.debug("===== test done.");
+	}
+
 	/**
 	 * @throws Exception
 	 *