diff --git a/create.go b/create.go
index b341743..1a481ba 100644
--- a/create.go
+++ b/create.go
@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"reflect"
 
+	"github.com/sijms/go-ora/v2"
 	"gorm.io/gorm"
 	"gorm.io/gorm/callbacks"
 	"gorm.io/gorm/clause"
@@ -205,6 +206,10 @@ func convertValue(val interface{}) interface{} {
 		} else {
 			val = 0
 		}
+	case string:
+		if len(v) > 2000 {
+			val = go_ora.Clob{String: v, Valid: true}
+		}
 	default:
 		val = convertCustomType(val)
 	}
diff --git a/oracle.go b/oracle.go
index ff649c7..3348d6a 100644
--- a/oracle.go
+++ b/oracle.go
@@ -404,13 +404,17 @@ func (d Dialector) QuoteTo(writer clause.Writer, str string) {
 var numericPlaceholder = regexp.MustCompile(`:(\d+)`)
 
 func (d Dialector) Explain(sql string, vars ...interface{}) string {
-	for idx, v := range vars {
-		if b, ok := ptrDereference(v).(bool); ok {
-			if b {
+	for idx, val := range vars {
+		val = ptrDereference(val)
+		switch v := ptrDereference(val).(type) {
+		case bool:
+			if v {
 				vars[idx] = 1
 			} else {
 				vars[idx] = 0
 			}
+		case go_ora.Clob:
+			vars[idx] = v.String
 		}
 	}
 	return logger.ExplainSQL(sql, numericPlaceholder, `'`, vars...)