diff --git a/src/infrastructure/daemon/PhabricatorDaemon.php b/src/infrastructure/daemon/PhabricatorDaemon.php
index 349e0f0ffe..6fd2ed6016 100644
--- a/src/infrastructure/daemon/PhabricatorDaemon.php
+++ b/src/infrastructure/daemon/PhabricatorDaemon.php
@@ -11,7 +11,7 @@ abstract class PhabricatorDaemon extends PhutilDaemon {
   }
 
   protected function willSleep($duration) {
-    LiskDAO::closeAllConnections();
+    LiskDAO::closeInactiveConnections(60);
     return;
   }
 
diff --git a/src/infrastructure/storage/lisk/LiskDAO.php b/src/infrastructure/storage/lisk/LiskDAO.php
index cf30dc35bc..e795777394 100644
--- a/src/infrastructure/storage/lisk/LiskDAO.php
+++ b/src/infrastructure/storage/lisk/LiskDAO.php
@@ -1621,10 +1621,55 @@ abstract class LiskDAO extends Phobject {
     return (bool)self::$transactionIsolationLevel;
   }
 
-  public static function closeAllConnections() {
-    self::$connections = array();
+  /**
+   * Close any connections with no recent activity.
+   *
+   * Long-running processes can use this method to clean up connections which
+   * have not been used recently.
+   *
+   * @param int Close connections with no activity for this many seconds.
+   * @return void
+   */
+  public static function closeInactiveConnections($idle_window) {
+    $connections = self::$connections;
+
+    $now = PhabricatorTime::getNow();
+    foreach ($connections as $key => $connection) {
+      $last_active = $connection->getLastActiveEpoch();
+
+      $idle_duration = ($now - $last_active);
+      if ($idle_duration <= $idle_window) {
+        continue;
+      }
+
+      self::closeConnection($key);
+    }
   }
 
+
+  public static function closeAllConnections() {
+    $connections = self::$connections;
+
+    foreach ($connections as $key => $connection) {
+      self::closeConnection($key);
+    }
+  }
+
+  private static function closeConnection($key) {
+    if (empty(self::$connections[$key])) {
+      throw new Exception(
+        pht(
+          'No database connection with connection key "%s" exists!',
+          $key));
+    }
+
+    $connection = self::$connections[$key];
+    unset(self::$connections[$key]);
+
+    $connection->close();
+  }
+
+
 /* -(  Utilities  )---------------------------------------------------------- */