# Drivers & Stacks **URL:** https://community.neo4j.com/c/drivers-stacks/26.md [Latest](https://community.neo4j.com/latest.md) · [Categories](https://community.neo4j.com/categories.md) · [Tags](https://community.neo4j.com/tags.md) --- ## [About the Drivers & Stacks category](https://community.neo4j.com/t/about-the-drivers-stacks-category/37)
**Author:** [@michael.hunger](https://community.neo4j.com/u/michael.hunger)\ **Replies:** 0\ **Last updated:** [June 11, 2018, 3:58pm UTC](https://community.neo4j.com/t/about-the-drivers-stacks-category/37 "2018-06-11T15:58:37Z")
All applications that are built using a database like Neo4j are using database drivers to execute statements to update or query the data. Neo4j drivers are mostly built on the binary bolt protocol. Official drivers exis… --- ## [How to make the Neo4jWriter in neo4j\_graph library to run the queries on a specific database](https://community.neo4j.com/t/how-to-make-the-neo4jwriter-in-neo4j-graph-library-to-run-the-queries-on-a-specific-database/80813)
**Author:** [@hapadmaja](https://community.neo4j.com/u/hapadmaja)\ **Replies:** 2\ **Last updated:** [August 28, 2026, 3:51am UTC](https://community.neo4j.com/t/how-to-make-the-neo4jwriter-in-neo4j-graph-library-to-run-the-queries-on-a-specific-database/80813 "2026-08-28T03:51:05Z")
I am using the Neo4jWriter from the neo4j\_graphrag library for a knowledge graph construction as part of Graph RAG. I specified the specific database name as parameter in its init parameter neo4j\_database. But when I u… --- ## [Errors after upgrading to spring-boot-data-neo4j 4.0.7](https://community.neo4j.com/t/errors-after-upgrading-to-spring-boot-data-neo4j-4-0-7/79300)
**Author:** [@ilgrosso](https://community.neo4j.com/u/ilgrosso)\ **Replies:** 2\ **Last updated:** [June 29, 2026, 9:18am UTC](https://community.neo4j.com/t/errors-after-upgrading-to-spring-boot-data-neo4j-4-0-7/79300 "2026-06-29T09:18:32Z")
When upgrading from spring-data-neo4j 8.0.5 to 8.0.6 (as part of Spring Boot 4.0.6 -\> 4.0.7 upgrade), it looks like Neo4jTemplate#findById is not populating the list fields mapped as incoming relationships. For example,… --- ## [First php neo4j query times out after 60 seconds, all queries work fine after](https://community.neo4j.com/t/first-php-neo4j-query-times-out-after-60-seconds-all-queries-work-fine-after/77699)
**Author:** [@dave.anderson](https://community.neo4j.com/u/dave.anderson)\ **Replies:** 4\ **Last updated:** [May 5, 2026, 8:59pm UTC](https://community.neo4j.com/t/first-php-neo4j-query-times-out-after-60-seconds-all-queries-work-fine-after/77699 "2026-05-05T20:59:22Z")
I am hoping for some clues on how to debug this. I think it is related to caching, perhaps I can turn caching off ? --- ## [Spring Data Neo4j : @RelationshipProperties not getting deleted](https://community.neo4j.com/t/spring-data-neo4j-relationshipproperties-not-getting-deleted/76364)
**Author:** [@telmodias1](https://community.neo4j.com/u/telmodias1)\ **Replies:** 4\ **Last updated:** [February 6, 2026, 6:31pm UTC](https://community.neo4j.com/t/spring-data-neo4j-relationshipproperties-not-getting-deleted/76364 "2026-02-06T18:31:53Z")
Hello, I’m quite new to SDN on Java and I could not find an explanation about how this works. I have the current java : @Node public class Application { @Id private String name; @Relationship(type = "EXPOSES", casc… --- ## [Problems about neo4j-community-4.1.3 running on arm](https://community.neo4j.com/t/problems-about-neo4j-community-4-1-3-running-on-arm/76276)
**Author:** [@1171333070](https://community.neo4j.com/u/1171333070)\ **Replies:** 3\ **Last updated:** [January 15, 2026, 4:02pm UTC](https://community.neo4j.com/t/problems-about-neo4j-community-4-1-3-running-on-arm/76276 "2026-01-15T16:02:34Z")
Server Environment: Operating System: Kylin V10 CPU Type: ARM CPU Cores: 16 Memory: 64 GB Neo4j Version: neo4j-community-4.1.3 JDK Version: openjdk-11.0.21 Case 1: When configured as: "dbms.memory.heap.initial\_s… --- ## [Efficient Search Across Elasticsearch and Neo4j Without Pulling Large Result Sets](https://community.neo4j.com/t/efficient-search-across-elasticsearch-and-neo4j-without-pulling-large-result-sets/76179)
**Author:** [@brryo6801](https://community.neo4j.com/u/brryo6801)\ **Replies:** 3\ **Last updated:** [December 31, 2025, 2:49pm UTC](https://community.neo4j.com/t/efficient-search-across-elasticsearch-and-neo4j-without-pulling-large-result-sets/76179 "2025-12-31T14:49:56Z")
i got : Elasticsearch stores most of the searchable / document-like data (text fields, city, etc.) Neo4j stores relationships and some entity attributes (e.g., gender, graph connections) Each entity exists in bo… --- ## [Nodes related to same nodes causing idempotence problems – Spring data Neo4j 7.4.7](https://community.neo4j.com/t/nodes-related-to-same-nodes-causing-idempotence-problems-spring-data-neo4j-7-4-7/75455)
**Author:** [@eferre](https://community.neo4j.com/u/eferre)\ **Replies:** 8\ **Last updated:** [December 5, 2025, 4:14pm UTC](https://community.neo4j.com/t/nodes-related-to-same-nodes-causing-idempotence-problems-spring-data-neo4j-7-4-7/75455 "2025-12-05T16:14:11Z")
Hello ! I am writing this topic because my team and I are encountering an issue during the use of Spring Data Neo4j 7.4.7. Here is some context to explain the issue. We have a node labeled Person : @Getter @NoArgsCo… --- ## [Neo4j Performance on an ARM64v8 System](https://community.neo4j.com/t/neo4j-performance-on-an-arm64v8-system/75984)
**Author:** [@tdpark-wx](https://community.neo4j.com/u/tdpark-wx)\ **Replies:** 4\ **Last updated:** [December 1, 2025, 11:01pm UTC](https://community.neo4j.com/t/neo4j-performance-on-an-arm64v8-system/75984 "2025-12-01T23:01:20Z")
Hello, I’ve been doing some hands-on research into databases to be used for embedded development at our company. Target system has an ARM64v8 architecture. Neo4j was the first database I tested. With ~2600 entries/calls… --- ## [Xemantic-neo4j-kotlin-driver-1.0.0 released](https://community.neo4j.com/t/xemantic-neo4j-kotlin-driver-1-0-0-released/75897)
**Author:** [@morisil](https://community.neo4j.com/u/morisil)\ **Replies:** 1\ **Last updated:** [November 17, 2025, 7:56am UTC](https://community.neo4j.com/t/xemantic-neo4j-kotlin-driver-1-0-0-released/75897 "2025-11-17T07:56:00Z")
Dear Community, Xemantic just released xemantic-neo4j-kotlin-driver-1.0.0 It allows to build Neo4j based apps and APIs with structured concurrency offered by Kotlin coroutines, with minimal boilerplate and maximal pe… --- ## [Kotlin and Ktor](https://community.neo4j.com/t/kotlin-and-ktor/72578)
**Author:** [@noahfraiture](https://community.neo4j.com/u/noahfraiture)\ **Replies:** 1\ **Last updated:** [October 29, 2025, 8:21pm UTC](https://community.neo4j.com/t/kotlin-and-ktor/72578 "2025-10-29T20:21:26Z")
Hello, I don't know if it's unusal but I found very little documentation on how to use neo4j with kotlin and more specially Ktor. I'm very new to this technology and it's a little bit confusing. I can perfectly run a ne… --- ## [Neo4j 5.x Spring Boot Starter Data Neo4j 3.5.6 Adding a property to a relation](https://community.neo4j.com/t/neo4j-5-x-spring-boot-starter-data-neo4j-3-5-6-adding-a-property-to-a-relation/75730)
**Author:** [@chris.webster](https://community.neo4j.com/u/chris.webster)\ **Replies:** 2\ **Last updated:** [October 24, 2025, 8:34am UTC](https://community.neo4j.com/t/neo4j-5-x-spring-boot-starter-data-neo4j-3-5-6-adding-a-property-to-a-relation/75730 "2025-10-24T08:34:48Z")
Hi, full disclosure, I am new to Neo4j. As a learning tool I am rewriting an app to use Neo4j with a view to leveraging it’s functionality for a reccommendation tool and eventually a machine learning engine. To that end … --- ## [Help with Building Knowledge Graph for Unstructured Date using Neo4j API](https://community.neo4j.com/t/help-with-building-knowledge-graph-for-unstructured-date-using-neo4j-api/75619)
**Author:** [@saleh.samer](https://community.neo4j.com/u/saleh.samer)\ **Replies:** 2\ **Last updated:** [October 20, 2025, 10:54am UTC](https://community.neo4j.com/t/help-with-building-knowledge-graph-for-unstructured-date-using-neo4j-api/75619 "2025-10-20T10:54:23Z")
Hi, Im trying to use the Neo4J API to generate Knowledge Graph put of Unstructured Data. I tried to follow the tutorial and the example listed in the developer guide . Im using the SimpleKGBuilder as the following: pi… --- ## [Cannot connect to Community Noe4j 2025 09 from Python on same machine](https://community.neo4j.com/t/cannot-connect-to-community-noe4j-2025-09-from-python-on-same-machine/75719)
**Author:** [@curtjef1](https://community.neo4j.com/u/curtjef1)\ **Replies:** 9\ **Last updated:** [October 20, 2025, 5:38am UTC](https://community.neo4j.com/t/cannot-connect-to-community-noe4j-2025-09-from-python-on-same-machine/75719 "2025-10-20T05:38:05Z")
I have the latest Community version of Neo4j 2025 09 and cannot connect to it from a python script - on the same machine. Is there a problem with this version? python code: from neo4j import GraphDatabase class Sa… --- ## [Slow and crashing queries in driver, but fast in query browser](https://community.neo4j.com/t/slow-and-crashing-queries-in-driver-but-fast-in-query-browser/75611)
**Author:** [@martijn](https://community.neo4j.com/u/martijn)\ **Replies:** 5\ **Last updated:** [October 7, 2025, 8:31am UTC](https://community.neo4j.com/t/slow-and-crashing-queries-in-driver-but-fast-in-query-browser/75611 "2025-10-07T08:31:18Z")
I’m testing a query searching through some complicated data. The query looks like this: MATCH p=((a:Something {id: $id})-\[:LINKED\_TO\_DATASET\]-(:DataSet) \<-\[:PART\_OF\_SET\]-(:DataElement) \<-\[:MAPPING\]-(:DifferentDataElemen… --- ## [Possible bug parsing bookmarks](https://community.neo4j.com/t/possible-bug-parsing-bookmarks/75517)
**Author:** [@swellard](https://community.neo4j.com/u/swellard)\ **Replies:** 1\ **Last updated:** [September 29, 2025, 2:31pm UTC](https://community.neo4j.com/t/possible-bug-parsing-bookmarks/75517 "2025-09-29T14:31:46Z")
We are moving to version 5.28.9 of the Java driver and I have notice an inconsistency (maybe a bug) in the response when invalid bookmarks are removed If I use FB:kcwQFYBpmIv+SNC72W (which I created from a valid bookmar… --- ## [Python GraphRAG 1.9.1 of our Framework has been released](https://community.neo4j.com/t/python-graphrag-1-9-1-of-our-framework-has-been-released/75056)
**Author:** [@Ari\_Neo4j](https://community.neo4j.com/u/Ari_Neo4j)\ **Replies:** 0\ **Last updated:** [August 8, 2025, 1:56pm UTC](https://community.neo4j.com/t/python-graphrag-1-9-1-of-our-framework-has-been-released/75056 "2025-08-08T13:56:49Z")
Main changes: Fix documentation for PdfLoader Fix a bug where the format argument for OllamaLLM was not propagated to the client, mainly the format=“json” parameter that was not working before Fix attribute error in Ve… --- ## [Best way to fetch data from a birectional graph upto a certain depth?](https://community.neo4j.com/t/best-way-to-fetch-data-from-a-birectional-graph-upto-a-certain-depth/74718)
**Author:** [@mranand4](https://community.neo4j.com/u/mranand4)\ **Replies:** 6\ **Last updated:** [July 17, 2025, 5:44pm UTC](https://community.neo4j.com/t/best-way-to-fetch-data-from-a-birectional-graph-upto-a-certain-depth/74718 "2025-07-17T17:44:38Z")
I'm working on a project wherein we have to visualize graph data from Neo4J on a webpage. This data will be exported through our backend app (Java/Spring Boot) which will be connected to our Neo4J instance. Backend will … --- ## [Facing Issues Executing spatial.intersects with Write Permissions in Neo4j-GraphQL](https://community.neo4j.com/t/facing-issues-executing-spatial-intersects-with-write-permissions-in-neo4j-graphql/71952)
**Author:** [@sgs97](https://community.neo4j.com/u/sgs97)\ **Replies:** 4\ **Last updated:** [June 30, 2025, 8:32am UTC](https://community.neo4j.com/t/facing-issues-executing-spatial-intersects-with-write-permissions-in-neo4j-graphql/71952 "2025-06-30T08:32:45Z")
Hello Neo4j Community, I am working on a Neo4j-GraphQL integration and attempting to use the spatial.intersects function to query spatial data using @cypherschema. The problem is that spatial.intersects require write p… --- ## [Object Graph Mapper for .NET](https://community.neo4j.com/t/object-graph-mapper-for-net/17822)
**Author:** [@michalkomorowski1984](https://community.neo4j.com/u/michalkomorowski1984)\ **Replies:** 7\ **Last updated:** [June 28, 2025, 10:44pm UTC](https://community.neo4j.com/t/object-graph-mapper-for-net/17822 "2025-06-28T22:44:37Z")
I know that there is an official Object Graph Mapper for Java. However, I haven't found anything official for .NET so I searched for solutions from the community and I found two: https://www.blueprint41.com/ GitHub - … --- ## [Any ideas ... dynamic query and parameters](https://community.neo4j.com/t/any-ideas-dynamic-query-and-parameters/74219)
**Author:** [@joshcornejo](https://community.neo4j.com/u/joshcornejo)\ **Replies:** 23\ **Last updated:** [June 25, 2025, 4:59pm UTC](https://community.neo4j.com/t/any-ideas-dynamic-query-and-parameters/74219 "2025-06-25T16:59:40Z")
In some code I am writing, I build a query dynamically, if I capture theParams which is a Dictionary \ and the query strings and move them to the browser, the query fetches what I need (in the example I am… --- ## [Cypher request not returning any node](https://community.neo4j.com/t/cypher-request-not-returning-any-node/74102)
**Author:** [@xenyiogran](https://community.neo4j.com/u/xenyiogran)\ **Replies:** 7\ **Last updated:** [June 11, 2025, 6:27pm UTC](https://community.neo4j.com/t/cypher-request-not-returning-any-node/74102 "2025-06-11T18:27:12Z")
Hello, I'm stuck for a while on my side project. I want to build a database of exercises. These exercises would be labeled by competencies : as they would be math exercises, competencies would be "fractions", "equations… --- ## [Exception with version 5.28 driver](https://community.neo4j.com/t/exception-with-version-5-28-driver/73728)
**Author:** [@lclay](https://community.neo4j.com/u/lclay)\ **Replies:** 7\ **Last updated:** [June 10, 2025, 12:19pm UTC](https://community.neo4j.com/t/exception-with-version-5-28-driver/73728 "2025-06-10T12:19:22Z")
I saw the notification about 5.28 being released the other day so I updated it in my project. Code that had been working fine suddenly starting throwing random exceptions. It's still in development, so the data set being… --- ## [I got error while starting neo4j with my own java extensions](https://community.neo4j.com/t/i-got-error-while-starting-neo4j-with-my-own-java-extensions/74105)
**Author:** [@paolodipietro58](https://community.neo4j.com/u/paolodipietro58)\ **Replies:** 3\ **Last updated:** [June 9, 2025, 6:35am UTC](https://community.neo4j.com/t/i-got-error-while-starting-neo4j-with-my-own-java-extensions/74105 "2025-06-09T06:35:19Z")
I'm using Neo4j enterprise 5.26.7 on ubuntu 24.01 LTS. Java compiler I created three java extension for encrypyton purposes. running maven returns these warnings but sai also that they are not a problem. Then I delive… --- ## [Explicitly Specify database name with liquibase-neo4j](https://community.neo4j.com/t/explicitly-specify-database-name-with-liquibase-neo4j/73972)
**Author:** [@npatel](https://community.neo4j.com/u/npatel)\ **Replies:** 3\ **Last updated:** [May 30, 2025, 4:34am UTC](https://community.neo4j.com/t/explicitly-specify-database-name-with-liquibase-neo4j/73972 "2025-05-30T04:34:48Z")
Hi, We have Configuration - Neo4j Plugin for Liquibase this configured and works with default database. But now we want to try some blue/green kind of deployment where we will have 2 neo4j instance running and let the l… --- ## [Efficient Bulk Creation of Graph Structures in Python (JPA-style Annotations?)](https://community.neo4j.com/t/efficient-bulk-creation-of-graph-structures-in-python-jpa-style-annotations/73947)
**Author:** [@gendebug1](https://community.neo4j.com/u/gendebug1)\ **Replies:** 2\ **Last updated:** [May 28, 2025, 12:48pm UTC](https://community.neo4j.com/t/efficient-bulk-creation-of-graph-structures-in-python-jpa-style-annotations/73947 "2025-05-28T12:48:45Z")
Hi all, We’re building a Python system that constructs complex graph structures and saves them to Neo4j. Currently, our code inserts nodes and relationships one by one, which is too slow. We’re looking to: Define grap… --- ## [Parameterised relationship type setting](https://community.neo4j.com/t/parameterised-relationship-type-setting/72395)
**Author:** [@coussementpieter](https://community.neo4j.com/u/coussementpieter)\ **Replies:** 1\ **Last updated:** [May 22, 2025, 6:58pm UTC](https://community.neo4j.com/t/parameterised-relationship-type-setting/72395 "2025-05-22T18:58:41Z")
i want to build relationships paramerterized. def create\_relationship(self, id\_node1, id\_node2, relationship\_dict, relationship\_type): query = ( "MATCH (n1 {id\_bn: $id\_node1}), (n2 {id\_bn: $id\_n… --- ## [GraphQL in Neo4J Aura life cycle](https://community.neo4j.com/t/graphql-in-neo4j-aura-life-cycle/73665)
**Author:** [@lior.bass](https://community.neo4j.com/u/lior.bass)\ **Replies:** 2\ **Last updated:** [April 27, 2025, 2:14pm UTC](https://community.neo4j.com/t/graphql-in-neo4j-aura-life-cycle/73665 "2025-04-27T14:14:17Z")
Hello, I was using the GraphQL in Aura, and I've seen the end of the beta. I didn't understand the expected future for GraphQL support in Neo4j and especially in Aura. Can we expect GraphQL to transition to production?… --- ## [Casting a Node to a c# object](https://community.neo4j.com/t/casting-a-node-to-a-c-object/17968)
**Author:** [@bruceh](https://community.neo4j.com/u/bruceh)\ **Replies:** 2\ **Last updated:** [April 26, 2025, 2:01pm UTC](https://community.neo4j.com/t/casting-a-node-to-a-c-object/17968 "2025-04-26T14:01:01Z")
Hey Neo / C# units... Now that Neo4JClient is obselete (hasn't been updated in over a year) I assume new devs like me are using bolt 4.0. I'm looking for a nice way to cast a node or relationship into one of my c# obj… --- ## [Connection Acquisition Timeout](https://community.neo4j.com/t/connection-acquisition-timeout/68680)
**Author:** [@yyakovson613](https://community.neo4j.com/u/yyakovson613)\ **Replies:** 1\ **Last updated:** [April 7, 2025, 8:04am UTC](https://community.neo4j.com/t/connection-acquisition-timeout/68680 "2025-04-07T08:04:33Z")
We are getting this error intermittantly, a few times a day: Neo4jError: Connection acquisition timed out in 60000 ms. Pool status: Active conn count = 0, Idle conn count = 0. I do not see any pattern for when it occur… [Next page](https://community.neo4j.com/c/drivers-stacks/26.md?page=1)