diff --git a/CHANGELOG.md b/CHANGELOG.md
index 83c7b08e8..259322cdc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ Now naming strategy should be registered by passing naming strategy instance dir
 * env variable names for connection were changed (`TYPEORM_DRIVER_TYPE` has been renamed to `TYPEORM_CONNECTION`, some other renaming).
 More env variable names you can find in `ConnectionOptionsEnvReader` class.
 * some api changes in `ConnectionManager` and `createConnection` / `createConnections` methods of typeorm main entrypoint
+* `usePool` option has been removed from connection options. Now connections are working only with connection pooling
 
 ### OTHER API CHANGES
 
diff --git a/src/driver/DatabaseConnection.ts b/src/driver/DatabaseConnection.ts
index bcd73eca6..498536f68 100644
--- a/src/driver/DatabaseConnection.ts
+++ b/src/driver/DatabaseConnection.ts
@@ -6,12 +6,12 @@ export interface DatabaseConnection {
     /**
      * Id of the connection.
      */
-    readonly id: number;
+    id: number;
 
     /**
      * Native driver's connection object.
      */
-    readonly connection: any;
+    connection: any;
 
     /**
      * Connection's transaction instance.
diff --git a/src/driver/DriverOptions.ts b/src/driver/DriverOptions.ts
index a23237983..aa701c0e7 100644
--- a/src/driver/DriverOptions.ts
+++ b/src/driver/DriverOptions.ts
@@ -57,15 +57,6 @@ export interface DriverOptions {
      */
     storage?: string;
 
-    /**
-     * Indicates if connection pooling should be used or not.
-     * Be default it is enabled if its supported by a platform.
-     * Set to false to disable it.
-     *
-     * @todo: rename to disablePool? What about mongodb pool?
-     */
-    usePool?: boolean;
-
     /**
      * Extra connection options to be passed to the underlying driver.
      */
diff --git a/src/logger/Logger.ts b/src/logger/Logger.ts
index 39fb7dc18..7d2e80fce 100644
--- a/src/logger/Logger.ts
+++ b/src/logger/Logger.ts
@@ -3,6 +3,8 @@ import {PlatformTools} from "../platform/PlatformTools";
 
 /**
  * Performs logging of the events in TypeORM.
+ *
+ * todo: implement logging of too long running queries (there should be option to control max query execution time)
  */
 export class Logger {