diff --git a/src/main/java/com/mykola2312/mptv/Main.java b/src/main/java/com/mykola2312/mptv/Main.java
index ca96134..401893e 100644
--- a/src/main/java/com/mykola2312/mptv/Main.java
+++ b/src/main/java/com/mykola2312/mptv/Main.java
@@ -12,7 +12,6 @@ import org.jooq.Record;
 import org.jooq.impl.*;
 
 import java.io.IOException;
-import java.sql.Connection;
 
 public class Main {
     private static final Logger logger = Logger.getLogger(Main.class);
diff --git a/src/main/java/com/mykola2312/mptv/db/DBPool.java b/src/main/java/com/mykola2312/mptv/db/DBPool.java
index ddbe14f..1106ef0 100644
--- a/src/main/java/com/mykola2312/mptv/db/DBPool.java
+++ b/src/main/java/com/mykola2312/mptv/db/DBPool.java
@@ -53,6 +53,7 @@ public class DBPool implements ConnectionProvider {
 
     @Override
     public @Nullable Connection acquire() throws DataAccessException {
+        logger.debug("acquire");
         DBConnection conn;
         try {
             conn = connections
@@ -87,6 +88,8 @@ public class DBPool implements ConnectionProvider {
             if (connections.size() > POOL_LOW_CAP) {
                 connections.remove(db);
             }
+
+            logger.debug(String.format("release %s", db.toString()));
         } catch (NoSuchElementException e) {
             throw new DataAccessException("connection is not present in pool");
         }