diff --git a/dotCMS/src/main/java/com/dotmarketing/business/PermissionBitFactoryImpl.java b/dotCMS/src/main/java/com/dotmarketing/business/PermissionBitFactoryImpl.java
index bb5f86976751..0a0a841db240 100644
--- a/dotCMS/src/main/java/com/dotmarketing/business/PermissionBitFactoryImpl.java
+++ b/dotCMS/src/main/java/com/dotmarketing/business/PermissionBitFactoryImpl.java
@@ -50,7 +50,6 @@
 
 import com.liferay.portal.model.User;
 import java.lang.reflect.Field;
-import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -82,6 +81,12 @@ public class PermissionBitFactoryImpl extends PermissionFactory {
 		: null
 	;
 
+    private static final String PERMISSION_REFERENCE = "permission_reference";
+    private static final String ASSET_ID = "asset_id";
+    private static final String REFERENCE_ID = "reference_id";
+    private static final String PERMISSION_TYPE = "permission_type";
+    private static final String ID = "id";
+
 	//SQL Queries used to maintain permissions
 
 	/*
@@ -2270,6 +2275,7 @@ private List<Permission> loadPermissions(Permissionable permissionable) throws D
 
 	}
 
+
     @WrapInTransaction
 	private void deleteInsertPermission(Permissionable permissionable, String type,
             Permissionable newReference) throws DotDataException {
@@ -2293,30 +2299,30 @@ private void deleteInsertPermission(Permissionable permissionable, String type,
                 dc1.executeUpdate(DELETE_PERMISSIONABLE_REFERENCE_SQL, permissionId);
 
                 if (DbConnectionFactory.isPostgres()) {
-					String query = SQLUtil.generateUpsertSQL("permission_reference", "asset_id",
-									new String[]{"id", "asset_id", "reference_id", "permission_type"},
+					String query = SQLUtil.generateUpsertSQL(PERMISSION_REFERENCE, ASSET_ID,
+									new String[]{ID, ASSET_ID, REFERENCE_ID, PERMISSION_TYPE},
 									new String[]{"nextval('permission_reference_seq')", SQLUtil.PARAMETER, SQLUtil.PARAMETER, SQLUtil.PARAMETER});
 					dc1.executeUpdate(query, permissionId, newReference.getPermissionId(), type,
 							permissionId, newReference.getPermissionId(), type);
 				}
 				if (DbConnectionFactory.isMySql()) {
-					String query = SQLUtil.generateUpsertSQL("permission_reference", "asset_id",
-									new String[]{"asset_id", "reference_id", "permission_type"},
+					String query = SQLUtil.generateUpsertSQL(PERMISSION_REFERENCE, ASSET_ID,
+									new String[]{ASSET_ID, REFERENCE_ID, PERMISSION_TYPE},
 									new String[]{SQLUtil.PARAMETER, SQLUtil.PARAMETER, SQLUtil.PARAMETER});
 					dc1.executeUpdate(query, permissionId, newReference.getPermissionId(), type,
 							permissionId, newReference.getPermissionId(), type);
 				}
 				if (DbConnectionFactory.isMsSql()) {
-					String query = SQLUtil.generateUpsertSQL("permission_reference", "asset_id",
-							new String[]{"asset_id", "reference_id", "permission_type"},
+					String query = SQLUtil.generateUpsertSQL(PERMISSION_REFERENCE, ASSET_ID,
+							new String[]{ASSET_ID, REFERENCE_ID, PERMISSION_TYPE},
 							new String[]{SQLUtil.PARAMETER, SQLUtil.PARAMETER, SQLUtil.PARAMETER});
 					dc1.executeUpdate(query, permissionId,
 							permissionId, newReference.getPermissionId(), type,
 							permissionId, newReference.getPermissionId(), type);
 				}
 				if (DbConnectionFactory.isOracle()) {
-					String query = SQLUtil.generateUpsertSQL("permission_reference", "asset_id",
-							new String[]{"id", "asset_id", "reference_id", "permission_type"},
+					String query = SQLUtil.generateUpsertSQL(PERMISSION_REFERENCE, ASSET_ID,
+							new String[]{ID, ASSET_ID, REFERENCE_ID, PERMISSION_TYPE},
 							new String[]{"permission_reference_seq.NEXTVAL", SQLUtil.PARAMETER, SQLUtil.PARAMETER, SQLUtil.PARAMETER});
                 	try {
                 		//In Oracle the Upsert (Merge) is not thread safe. Attempt to insert first:
diff --git a/dotCMS/src/main/java/com/dotmarketing/common/util/SQLUtil.java b/dotCMS/src/main/java/com/dotmarketing/common/util/SQLUtil.java
index 2755d39ac131..a1529afe010b 100644
--- a/dotCMS/src/main/java/com/dotmarketing/common/util/SQLUtil.java
+++ b/dotCMS/src/main/java/com/dotmarketing/common/util/SQLUtil.java
@@ -360,6 +360,15 @@ private static boolean isValidSQLCharacter (final char c) {
 			+ "  INSERT (%s) "
 			+ "  VALUES (%s)";
 
+	/**
+	 * This method generates an Upsert SQL query (Insert/Update)
+	 * Note: Oracle Upsert is not thread safe and when executed can throw SQLException: Unique constraint violation
+	 * @param table name
+	 * @param conditionalColumn The unique column to verify if the record exists or not. A parameter (?) will be added to the SQL Query for the conditionalValue, required in MSSQL and Oracle only.
+	 * @param columns to be inserted/updated
+	 * @param values to be inserted/updated... You can use SQLUtil.Parameter to specify a ? for a value
+	 * @return String with the SQL query
+	 */
 	public static String generateUpsertSQL (String table, String conditionalColumn, String[] columns, String[] values) {
 		String query = null;