<p dir="auto">If you have a directory named ''upgrade_backup'' in your Neo4j database directory, startup can fail.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="axel@dev1 ~/Downloads/neo4j-community-2.1.2$ bin/neo4j start
WARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.
Using additional JVM arguments:  -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled
Starting Neo4j Server...WARNING: not changing user
process [4736]... waiting for server to be ready..... Failed to start within 120 seconds.
Neo4j Server may have failed to start, please check the logs."><pre class="notranslate"><code class="notranslate">axel@dev1 ~/Downloads/neo4j-community-2.1.2$ bin/neo4j start
WARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.
Using additional JVM arguments:  -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled
Starting Neo4j Server...WARNING: not changing user
process [4736]... waiting for server to be ready..... Failed to start within 120 seconds.
Neo4j Server may have failed to start, please check the logs.
</code></pre></div>
<p dir="auto"><a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/Romiko/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/Romiko">@Romiko</a>: 'Hi,</p>
<p dir="auto">I notice that if a DB Upgrade needs to be performed, it will try upgrade the database, but if there was already a backup of the DB from a previous upgrade, it then fails.</p>
<p dir="auto">[WaWorkerHost.exe]  at org.neo4j.server.Bootstrapper.main(Bootstrapper.java:52)<br>
[WaWorkerHost.exe] Caused by: org.neo4j.kernel.impl.storemigration.StoreUpgrader$UnableToUpgradeException: Cannot proceed with upgrade because there is an existing upgrade backup in the way at C:\AzureTemp\neo4j-db\upgrade_backup. If you do not need this backup please delete it or move it out of the way before re-attempting upgrade.</p>
<p dir="auto">I am wondering, would it not be better to have support for multiple backup folders.'</p>