# ORACLE datasource **URL:** \ **Category:** Uncategorized\ **Created:** [August 30, 2019, 2:35pm UTC](https://forum.radzen.com/t/oracle-datasource/1526 "2019-08-30T14:35:45Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![eric](https://forum.radzen.com/letter_avatar_proxy/v4/letter/e/898d66/32.png) [@eric](https://forum.radzen.com/u/eric)\ **Post date:** [August 30, 2019, 2:35pm UTC](https://forum.radzen.com/t/oracle-datasource/1526/1 "2019-08-30T14:35:45Z")
Hi, I am trying to connect to an Oracle Datasource, but I get the following message after hang up on "inferring schema". Any idea ? eric [2019-08-30 10:29:29.502] [info] Checking for update [2019-08-30 10:29:30.068] [info] Update for version 2.20.4 is not available (latest version: 2.20.4, downgrade is disallowed. [2019-08-30 10:31:58.155] [error] TypeError: Cannot set property 'x-key' of undefined at Pn.Object (file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:290:2734642) at file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:9:27896 at Gr (file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:9:17762) at file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:9:27701 at Wo (file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:9:40202) at Pn (file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:290:2732712) at br.then.e (file:///C:/Program%20Files/Radzen/resources/app.asar/static/renderer.js:290:2793749) ---
**Author:** ![enchev](https://forum.radzen.com/user_avatar/forum.radzen.com/enchev/32/16_2.png) [@enchev](https://forum.radzen.com/u/enchev)\ **Post date:** [August 30, 2019, 2:51pm UTC](https://forum.radzen.com/t/oracle-datasource/1526/2 "2019-08-30T14:51:01Z")
Can you send us (at [info@radzen.com](mailto:info@radzen.com)) sql script with your schema? ---
**Author:** ![eric](https://forum.radzen.com/letter_avatar_proxy/v4/letter/e/898d66/32.png) [@eric](https://forum.radzen.com/u/eric)\ **Post date:** [August 30, 2019, 3:00pm UTC](https://forum.radzen.com/t/oracle-datasource/1526/3 "2019-08-30T15:00:03Z")
sorry but it is private. Anyway it is just at the creation of the new datasource connection to the database, it does not work. please precise exactly what to put in the server and database boxes. do you use a instanclient ? or it s a direct tcpip connection thx eric fg ---
**Author:** ![enchev](https://forum.radzen.com/user_avatar/forum.radzen.com/enchev/32/16_2.png) [@enchev](https://forum.radzen.com/u/enchev)\ **Post date:** [August 30, 2019, 3:22pm UTC](https://forum.radzen.com/t/oracle-datasource/1526/4 "2019-08-30T15:22:35Z")
What you’ve entered as connection is correct and the database schema is retrieved. The error is raised during foreign keys infer - without your schema (just schema not data) however we cannot do much. ---
**Author:** ![enchev](https://forum.radzen.com/user_avatar/forum.radzen.com/enchev/32/16_2.png) [@enchev](https://forum.radzen.com/u/enchev)\ **Post date:** [September 2, 2019, 6:43am UTC](https://forum.radzen.com/t/oracle-datasource/1526/5 "2019-09-02T06:43:30Z")
Hi Eric, We were able to identify and fix the problem with your schema.The fix will be included in next Radzen release (before the end of this week). Best Regards, Vladimir ---
**Author:** ![Carlos\_Pinango](https://forum.radzen.com/user_avatar/forum.radzen.com/carlos_pinango/32/4630_2.png) [@Carlos\_Pinango](https://forum.radzen.com/u/Carlos_Pinango)\ **Post date:** [October 5, 2020, 9:56pm UTC](https://forum.radzen.com/t/oracle-datasource/1526/6 "2020-10-05T21:56:15Z")
Hola. Tengo una versión de prueba de Radzen, mi base de datos tiene aproximadamente 1000 tablas, todas con sus respectivos Primary Key, sin embargo al seleccionar una única tabla para realizar algunas pruebas me arroja el mismo error que comentan en este caso. Lo dejaré adjunto. ![Error Oracle Radzen + log](https://forum.radzen.com/uploads/default/original/2X/6/6ad80f562a589f7b1c466aa9b11ca8b1c4692799.jpeg)