# Neo4j Connection Failure during Test Connection
**URL:** https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286
**Category:** Watchers
**Created:** [August 8, 2020, 11:27am UTC](https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286 "2020-08-08T11:27:09Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Saili\_Bakalkar](https://community.siren.io/u/Saili_Bakalkar)
#### Post date: [August 8, 2020, 11:27am UTC](https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286/1 "2020-08-08T11:27:09Z")
I have properly installled the Jdbc driver still getting the following error.
Datasources Configuration Editor: Could not validate datasource [Neo4j]. {“error”:{“root\_cause”:[{“type”:“exception”,“reason”:“Could not validate datasource [Neo4j].”}],“type”:“exception”,“reason”:“Could not validate datasource [Neo4j].”,“caused\_by”:{“type”:“s\_q\_l\_exception”,“reason”:“Some errors occurred : \n[Neo.ClientError.Statement.SyntaxError]:START is deprecated, use: `MATCH (n)` instead.\n (line 1, column 1 (offset: 0))\r\n"START n=NODE(\*) MATCH (n) RETURN COUNT(n)”\r\n ^\n"}},“status”:500} less
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### Author:  [@Saili\_Bakalkar](https://community.siren.io/u/Saili_Bakalkar)
#### Post date: [August 8, 2020, 11:37am UTC](https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286/2 "2020-08-08T11:37:09Z")
I even get this error in Data Reflection
Could not execute datasource query [Neo4j]. | Some errors occurred : [Neo.ClientError.Procedure.ProcedureNotFound]:There is no procedure with the name `db.schema` registered for this database instance. Please ensure you’ve spelled the procedure name correctly and that the procedure is properly deployed.
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### Author:  [@varun.sharma](https://community.siren.io/u/varun.sharma)
#### Post date: [August 8, 2020, 2:34pm UTC](https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286/3 "2020-08-08T14:34:59Z")
Hello @Saili_Bakalkar,
What version of Neo4j are you using? I’d recommend downloading Neo4j JDBC Driver [v3.4.0](https://mvnrepository.com/artifact/org.neo4j/neo4j-jdbc-driver/3.4.0) as stated in our [JDBC driver installation and compatibility](https://docs.support.siren.io/siren-federate-user-guide/20.0/siren-federate/connecting-to-remote.html#siren-federate-jdbc-compat) documentation.
There have been quite a few Breaking Changes in Neo4j, such as removal of `db.schema` procedure in starting v4.0.
Regards,
Varun
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### Author:  [@varun.sharma](https://community.siren.io/u/varun.sharma)
#### Post date: [August 8, 2020, 2:37pm UTC](https://community.siren.io/t/neo4j-connection-failure-during-test-connection/286/4 "2020-08-08T14:37:03Z")
[More information on deprecations](https://neo4j.com/docs/cypher-manual/current/deprecations-additions-removals-compatibility/#cypher-deprecations-additions-removals-4.0).