Repetitive failures (start up time out) to start DBMS and Unstable Bloom

Neo4j Graph Platform Installation
,
1

I installed Neo4j desktop 4.2.5 on Ubuntu 19.04 two years back and was able to develop and populate a database with about 3900 nodes and 7600 relationships with a few instances grouped in one project.
Each time I start one of the DBMS of this project (large or small) I receive a red warning message telling me "DBLS failed to start: Startup timed out, see logs". However, on clicking again on the start button he normal stop and open buttons appear in the top line of the Neo4j instance 1.4.15 and I am always in capacity to open the database and perform my work in the browser. So I did not bother about these failure messages.
I am now in the process of developing some perspectives in Bloom to express various features of the database. But Bloom is unstable in that I can search for a particular node, view it but then I can never have a result when I try expanding from the node I picked up. I then end up with my computer blocked. May be this unstablility is linked to an installation problem like the failure messages when starting dbms?
Can some one help?
Thank you
Best regards
Vincent
Here are a few last lines of the debug log when starting a dbms

2023-02-15 18:51:46.404+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.io.VFSFileSystem` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/commons/vfs2/FileSystemException
2023-02-15 18:51:46.515+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.interpol.ExprLookup` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/commons/jexl2/JexlContext
2023-02-15 18:51:46.572+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.reloading.VFSFileHandlerReloadingDetector` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/commons/vfs2/FileSystemException
2023-02-15 18:51:46.758+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.resolver.CatalogResolver` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/xml/resolver/CatalogManager
2023-02-15 18:51:46.768+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.resolver.CatalogResolver$Catalog` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/xml/resolver/Catalog
2023-02-15 18:51:46.771+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.resolver.CatalogResolver$CatalogManager` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/xml/resolver/CatalogManager
2023-02-15 18:51:46.776+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.spring.ConfigurationPropertySource` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/springframework/core/env/EnumerablePropertySource
2023-02-15 18:51:46.785+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.configuration2.spring.ConfigurationPropertiesFactoryBean` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/springframework/beans/factory/InitializingBean
2023-02-15 18:51:49.268+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `module-info` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: module-info is not a class because access_flag ACC_MODULE is set
2023-02-15 18:51:50.034+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `schemacrawler.tools.integration.graph.GraphvizJavaExecutorUtility` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: guru/nidi/graphviz/engine/Format
2023-02-15 18:51:50.103+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `schemacrawler.tools.integration.freemarker.FreeMarkerRenderer` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: freemarker/cache/TemplateLoader
2023-02-15 18:51:50.157+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `schemacrawler.tools.integration.mustache.MustacheRenderer` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: com/github/mustachejava/MustacheFactory
2023-02-15 18:51:50.166+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `schemacrawler.tools.integration.thymeleaf.ThymeleafRenderer` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/thymeleaf/templateresolver/ITemplateResolver
2023-02-15 18:51:50.196+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `schemacrawler.tools.integration.velocity.VelocityRenderer` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/velocity/exception/ResourceNotFoundException
2023-02-15 18:51:56.374+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.antlr.runtime.tree.DOTTreeGenerator` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/antlr/stringtemplate/StringTemplate
2023-02-15 18:52:03.368+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.logging.impl.AvalonLogger` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/avalon/framework/logger/Logger
2023-02-15 18:52:03.383+0000 WARN  [o.n.k.a.p.GlobalProcedures] Failed to load `org.apache.commons.logging.impl.Log4JLogger` from plugin jar `/home/vincent2718/.config/Neo4j%20Desktop/Application/relate-data/dbmss/dbms-c155776d-9fae-4a02-bb5c-415361d74556/plugins/apoc-4.2.0.5.jar`: org/apache/log4j/Priority
2

Can you share the desktop log too and the full debug log? The APOC warning messages are not related to your issues.

Did you check the memory config? the default one is really low.

3

Thank you very much for your help.
This morning I performed the following scenario:

1 starting neo4j at around 8:17
2 starting dbms (about 1000 nodes only) at around 8:18
3 red error message
4 I press again the start button and the top line of desktop gives me access to the stop and open buttons around 8:22
5 I open in Bloom, start a new perspective, search for one specific node. On right click I wish to expand that node but I can never have access to the line expand and the scene keeps clearing and reopening
6 I close Bloom.
I enclose the full debug and neo4j logs although the only interesting lines are the last one dated today.
debugVC230216_log.txt (1.5 MB)
neo4jVC230216_log.txt (15.3 KB)

In the config file I see the memory at 512m. Should I change for 1024?

Best regards
Vincent

4

Hey Michaël !
This is now some 14 days that my concern didn't get any reply.
Shall I understand that my problem is just desperate and that I should take radical measures like uninstalling and reinstalling everything?
What is your opinion?
Best regards
Vincent