diff --git a/connection.go b/connection.go
index 5648e47d..3b69f7f9 100644
--- a/connection.go
+++ b/connection.go
@@ -357,6 +357,7 @@ func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, err
 		// try to interpolate the parameters to save extra roundtrips for preparing and closing a statement
 		prepared, err := mc.interpolateParams(query, args)
 		if err != nil {
+			mc.log(err.Error())
 			return nil, err
 		}
 		query = prepared
@@ -367,6 +368,7 @@ func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, err
 		copied := mc.result
 		return &copied, err
 	}
+	mc.log(err.Error())
 	return nil, mc.markBadConn(err)
 }
 
@@ -375,23 +377,27 @@ func (mc *mysqlConn) exec(query string) error {
 	handleOk := mc.clearResult()
 	// Send command
 	if err := mc.writeCommandPacketStr(comQuery, query); err != nil {
+		mc.log(err.Error())
 		return mc.markBadConn(err)
 	}
 
 	// Read Result
 	resLen, _, err := handleOk.readResultSetHeaderPacket()
 	if err != nil {
+		mc.log(err.Error())
 		return err
 	}
 
 	if resLen > 0 {
 		// columns
 		if err := mc.skipColumns(resLen); err != nil {
+			mc.log(err.Error())
 			return err
 		}
 
 		// rows
 		if err := mc.skipRows(); err != nil {
+			mc.log(err.Error())
 			return err
 		}
 	}
@@ -416,6 +422,7 @@ func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error)
 		// try client-side prepare to reduce roundtrip
 		prepared, err := mc.interpolateParams(query, args)
 		if err != nil {
+			mc.log(err.Error())
 			return nil, err
 		}
 		query = prepared
@@ -423,6 +430,7 @@ func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error)
 	// Send command
 	err := mc.writeCommandPacketStr(comQuery, query)
 	if err != nil {
+		mc.log(err.Error())
 		return nil, mc.markBadConn(err)
 	}
 
@@ -430,6 +438,7 @@ func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error)
 	var resLen int
 	resLen, _, err = handleOk.readResultSetHeaderPacket()
 	if err != nil {
+		mc.log(err.Error())
 		return nil, err
 	}
 
@@ -508,12 +517,14 @@ func (mc *mysqlConn) Ping(ctx context.Context) (err error) {
 	}
 
 	if err = mc.watchCancel(ctx); err != nil {
+		mc.log(err.Error())
 		return
 	}
 	defer mc.finish()
 
 	handleOk := mc.clearResult()
 	if err = mc.writeCommandPacket(comPing); err != nil {
+		mc.log(err.Error())
 		return mc.markBadConn(err)
 	}
 
@@ -567,10 +578,12 @@ func (mc *mysqlConn) QueryContext(ctx context.Context, query string, args []driv
 func (mc *mysqlConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
 	dargs, err := namedValueToValue(args)
 	if err != nil {
+		mc.log(err.Error())
 		return nil, err
 	}
 
 	if err := mc.watchCancel(ctx); err != nil {
+		mc.log(err.Error())
 		return nil, err
 	}
 	defer mc.finish()
diff --git a/packets.go b/packets.go
index 6ef5a3e2..fc9c7bd6 100644
--- a/packets.go
+++ b/packets.go
@@ -31,6 +31,7 @@ func (mc *mysqlConn) readNext(n int) ([]byte, error) {
 	if mc.buf.len() < n {
 		err := mc.buf.fill(n, mc.readWithTimeout)
 		if err != nil {
+			mc.log(err)
 			return nil, err
 		}
 	}
@@ -53,6 +54,7 @@ func (mc *mysqlConn) readPacket() ([]byte, error) {
 		if err != nil {
 			mc.close()
 			if cerr := mc.canceled.Value(); cerr != nil {
+				mc.log(cerr)
 				return nil, cerr
 			}
 			mc.log(err)
@@ -95,6 +97,7 @@ func (mc *mysqlConn) readPacket() ([]byte, error) {
 		if err != nil {
 			mc.close()
 			if cerr := mc.canceled.Value(); cerr != nil {
+				mc.log(cerr)
 				return nil, cerr
 			}
 			mc.log(err)