diff --git a/src/org/kar/archidata/db/DbIo.java b/src/org/kar/archidata/db/DbIo.java
index 66412c4..8a53b61 100644
--- a/src/org/kar/archidata/db/DbIo.java
+++ b/src/org/kar/archidata/db/DbIo.java
@@ -24,47 +24,45 @@ public abstract class DbIo implements Closeable {
 
 	@Override
 	public synchronized final void close() throws IOException {
-		LOGGER.error("[{}] >>>>>>>>>>> Request close count={}", this.id, this.count);
+		LOGGER.trace("[{}] Request close count={}", this.id, this.count);
 		if (this.count <= 0) {
-			LOGGER.error("[{}] >>>>>>>>>>> Request one more close: {}", this.id, this.getClass().getCanonicalName());
+			LOGGER.error("[{}] Request one more close", this.id);
 			return;
 		}
 		this.count--;
 		if (this.count == 0) {
-			LOGGER.warn("v>>>>>>>>>>> close: {}", this.id, this.getClass().getCanonicalName());
+			LOGGER.trace("[{}] close", this.id);
 			closeImplement();
 		} else {
-			LOGGER.debug("v>>>>>>>>>>> postponed close: {}", this.id, this.getClass().getCanonicalName());
+			LOGGER.trace("[{}] postponed close", this.id);
 		}
 	}
 
 	public synchronized final void closeForce() throws IOException {
-		LOGGER.warn("[{}] >>>>>>>>>>> Request Force close count={}", this.id, this.count);
+		LOGGER.trace("[{}] Request Force close count={}", this.id, this.count);
 		if (this.count == 0) {
-			LOGGER.info("[{}] >>>>>>>>>>> Nothing to do in force close, DB is already closed", this.id);
+			LOGGER.trace("[{}] Nothing to do in force close, DB is already closed", this.id);
 			return;
 		}
 		if (this.config.getKeepConnected()) {
 			if (this.count >= 2) {
-				LOGGER.error("[{}] >>>>>>>>>>> force close: {} with {} connection on it", this.id,
-						this.getClass().getCanonicalName(), this.count - 1);
+				LOGGER.error("[{}] Force close: with {} connection on it", this.id, this.count - 1);
 			}
 		} else if (this.count >= 1) {
-			LOGGER.error("[{}] >>>>>>>>>>> force close: {} with {} connection on it", this.id,
-					this.getClass().getCanonicalName(), this.count);
+			LOGGER.error("[{}] Force close: with {} connection on it", this.id, this.count);
 		}
 		this.count = 0;
-		LOGGER.warn("[{}] >>>>>>>>>>> force close: {}", this.id, this.getClass().getCanonicalName());
+		LOGGER.trace("[{}] Force close", this.id);
 		closeImplement();
 	}
 
 	public synchronized final void open() throws IOException {
-		LOGGER.warn("[{}] >>>>>>>>>>> Request open count={}", this.id, this.count);
+		LOGGER.trace("[{}] Request open count={}", this.id, this.count);
 		if (this.count == 0) {
-			LOGGER.warn("[{}] >>>>>>>>>>> open: {}", this.id, this.getClass().getCanonicalName());
+			LOGGER.trace("[{}] open", this.id);
 			openImplement();
 		} else {
-			LOGGER.debug("[{}] >>>>>>>>>>> already open: {}", this.id, this.getClass().getCanonicalName());
+			LOGGER.trace("[{}] open: already done", this.id);
 		}
 		this.count++;
 
diff --git a/src/org/kar/archidata/db/DbIoFactory.java b/src/org/kar/archidata/db/DbIoFactory.java
index a455703..12841c7 100644
--- a/src/org/kar/archidata/db/DbIoFactory.java
+++ b/src/org/kar/archidata/db/DbIoFactory.java
@@ -34,7 +34,6 @@ public class DbIoFactory {
 			dbIo.open();
 			dbIoStored.add(dbIo);
 		}
-		dbIo.open();
 		return dbIo;
 	}
 
diff --git a/src/org/kar/archidata/db/DbIoSql.java b/src/org/kar/archidata/db/DbIoSql.java
index 09570e3..f5fa030 100644
--- a/src/org/kar/archidata/db/DbIoSql.java
+++ b/src/org/kar/archidata/db/DbIoSql.java
@@ -11,18 +11,17 @@ import org.slf4j.LoggerFactory;
 public class DbIoSql extends DbIo {
 	final static Logger LOGGER = LoggerFactory.getLogger(DbIoSql.class);
 
-	private Connection con = null;
+	private Connection connection = null;
 
 	public DbIoSql(final DbConfig config) throws IOException {
 		super(config);
 	}
 
 	public Connection getConnection() {
-		if (this.con == null) {
-			LOGGER.error("[{}] >>>>>>>>>> Retrieve a closed connection !!!", this.id);
+		if (this.connection == null) {
+			LOGGER.error("[{}] Retrieve a closed connection !!!", this.id);
 		}
-		LOGGER.error("[{}] ++++++++++ Retrieve connection {}", this.id, this.con);
-		return this.con;
+		return this.connection;
 	}
 
 	@Override
@@ -30,30 +29,26 @@ public class DbIoSql extends DbIo {
 		final String dbUrl = this.config.getUrl();
 		final String login = this.config.getLogin();
 		final String password = this.config.getPassword();
-		LOGGER.error("[{}] >>>>>>>>>> openImplement ", this.id);
 		try {
-			this.con = DriverManager.getConnection(dbUrl, login, password);
-			LOGGER.error("[{}] >>>>>>>>>> openImplement ==> {}", this.id, this.con);
+			this.connection = DriverManager.getConnection(dbUrl, login, password);
 		} catch (final SQLException ex) {
 			LOGGER.error("Connection db fail: " + ex.getMessage() + " On URL: " + dbUrl);
 			throw new IOException("Connection db fail: " + ex.getMessage() + " On URL: " + dbUrl);
 		}
-		if (this.con == null) {
-			LOGGER.error("Request open of un-open connection !!!");
-			return;
+		if (this.connection == null) {
+			throw new IOException("Connection db fail: NULL On URL: " + dbUrl);
 		}
 	}
 
 	@Override
 	synchronized public void closeImplement() throws IOException {
-		LOGGER.error("[{}] >>>>>>>>>> closeImplement ", this.id);
-		if (this.con == null) {
+		if (this.connection == null) {
 			LOGGER.error("Request close of un-open connection !!!");
 			return;
 		}
 		try {
-			this.con.close();
-			this.con = null;
+			this.connection.close();
+			this.connection = null;
 		} catch (final SQLException ex) {
 			throw new IOException("Dis-connection db fail: " + ex.getMessage());
 		}