Minor update for JSOn Duality View tests

Author: sharadraju

test/jsonDualityViews3.js

@@ -159,6 +159,9 @@ describe('274 jsonDualityView3.js', function() {
   });
 
   it('274.2 Create View on Virtual columns, UNUSED columns', async function() {
+    // Virtual columns are supported only from Oracle Database 23.6 onwards
+    if (connection.oracleServerVersion < 2306000000) this.skip();
+
     // create the parts table
     const createTableParts = `
       CREATE TABLE parts(

test/jsonDualityViews4.js

@@ -198,6 +198,9 @@ describe('275. jsonDualityView4.js', function() {
   });
 
   it('275.3 Test with virtual columns', async function() {
+    // Virtual columns are supported only from Oracle Database 23.6 onwards
+    if (connection.oracleServerVersion < 2306000000) this.skip();
+
     // create table t1
     const sqlCreateTable = `
       CREATE TABLE t1 (