Set the min and max connections to 1

lib/transaction-manager.js

@@ -22,8 +22,9 @@ TransactionManager.prototype.getConnectorManager = function(uuid) {
         {},
         Utils._.clone(config.pool || {}),
         {
-          maxConnections: 0,
-          useReplicaton: false
+          minConnections: 1,
+          maxConnections: 1,
+          useReplicaton:  false
         }
       )
       config.keepDefaultTimezone = true

test/transaction-manager.test.js

@@ -60,12 +60,13 @@ describe(Support.getTestDialectTeaser("TransactionManager"), function () {
         }
 
         Object.keys(this.sequelize.config.pool || {}).forEach(function(key) {
-          if (key !== 'maxConnections') {
+          if (['minConnections', 'maxConnections'].indexOf(key) === -1) {
             expect(connectorManager.config.pool[key]).to.equal(self.sequelize.config.pool[key])
           }
         })
 
-        expect(connectorManager.config.pool.maxConnections).to.equal(0)
+        expect(connectorManager.config.pool.minConnections).to.equal(1)
+        expect(connectorManager.config.pool.maxConnections).to.equal(1)
       })
     })
   })