CAST Imaging System - Configuration process - Memory configuration - Neo4j service failed

Purpose (problem description)

This page describes possible issues that may be encountered due to memory configuration of imaging.

Imaging version

Imaging versionYes/No
2..x✅

Step by Step scenario

  1. Launch Imaging
  2. Observe Neo4j service failed

Action Plan

If you encounter the above mentioned issue then perform the following  actions :

  1. Check the values set for below parameters from neo4j.conf file :

dbms.memory.heap.initial_size dbms.memory.heap.max_size dbms.memory.pagecache.size

2. Make sure that  **dbms.memory.heap.max\_size**  and **dbms.memory.pagecache.size** is not more than 50% of your RAM size.
3. You can also run an optimization test (**memrec**) that will recommend memory allocation and database settings for you. Please follow the below steps.  
   i. Open command prompt.  
   ii. cd %PROGRAMFILES%\CAST\ImagingSystem\neo4j\bin  
   iii. Run the command **"neo4j-admin memrec --memory=32G".**
4. Settings will be recommended as per your memory configuration. For example, below screenshot shows the result for same command in machine that has 16 GB RAM : 
   1. ![](https://doc-data.castsoftware.com/TG/attachments/566541332/635568258.png)
   2. ![](https://doc-data.castsoftware.com/TG/attachments/566541332/635568259.png)
5. Restarting the Neo4j service may not adequately reflect the configuration changes made. It is essential to update the service as well.  To update the service, run **bin\neo4j update-service**. Then restart the service to run it with the new configuration.   For  Docker restarting the container should be enough..
6. If the above steps do not solve your issue contact [CAST Technical Support](https://help.castsoftware.com/hc/en-us/requests/new). with the following [Relevant input](#CASTImagingSystemConfigurationprocessMemoryconfigurationNeo4jservicefailed-Relevantinput)

#### Relevant input

- [CAST Support Tool (CST)](https://help.castsoftware.com/hc/en-us/articles/203751708-CAST-Support-Tool-CST-alias-Sherlock) [-](https://help.castsoftware.com/hc/en-us/articles/203751708-CAST-Support-Tool-CST-alias-Sherlock) [alias Sherlock](https://help.castsoftware.com/hc/en-us/articles/203751708-CAST-Support-Tool-CST-alias-Sherlock) export with the following options **Export CAST Bases** with  Knowledge Base

- Memory configuration screenshot

**Notes/comments**

Ticket #28694

**Related Pages**