# Can't start Neo4j server

**URL:** <https://community.neo4j.com/t/cant-start-neo4j-server/53081>\
**Category:** Installation\
**Created:** [March 8, 2022, 12:05pm UTC](https://community.neo4j.com/t/cant-start-neo4j-server/53081 "2022-03-08T12:05:52Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![taylor.ren](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/taylor.ren/32/22850_2.png) [@taylor.ren](https://community.neo4j.com/u/taylor.ren)\
**Post date:** [March 8, 2022, 12:05pm UTC](https://community.neo4j.com/t/cant-start-neo4j-server/53081/1 "2022-03-08T12:05:53Z")

</div>

I followed the official document to install my Neo4j on my Ubuntu 2004 LTS.

After installation, I noticed:

1. There is a process run by `neo4j` as below:

```auto
neo4j 3698 2.5 1.0 1001632 80892 ? Ssl 19:54 0:00 mysqld --transaction-isolation=READ-COMMITTED --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=512 --innodb-rollback-on-timeout=OFF --innodb-lock-wait-timeout=50

```

I tried to kill it but it restarts again.

1. I tried to start my server by `sudo neo4j start` but it soon dies out. Thus making any of my further attemps to connect via web or Neo4j desktop unsuccessful.

```auto
√ ~ % ps aux | grep neo4j
neo4j 3698 0.0 1.0 1001632 80896 ? Ssl 19:54 0:00 mysqld --transaction-isolation=READ-COMMITTED --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=512 --innodb-rollback-on-timeout=OFF --innodb-lock-wait-timeout=50
root 4029 143 12.3 4741176 991296 pts/1 Sl 20:03 0:37 /usr/lib/jvm/java-11-openjdk-amd64/bin/java -cp /var/lib/neo4j/plugins/*:/etc/neo4j/*:/usr/share/neo4j/lib/* -XX:+UseG1GC -XX:-OmitStackTraceInFastThrow -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+TrustFinalNonStaticFields -XX:+DisableExplicitGC -XX:MaxInlineLevel=15 -XX:-UseBiasedLocking -Djdk.nio.maxCachedBufferSize=262144 -Dio.netty.tryReflectionSetAccessible=true -Djdk.tls.ephemeralDHKeySize=2048 -Djdk.tls.rejectClientInitiatedRenegotiation=true -XX:FlightRecorderOptions=stackdepth=256 -XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints -Dlog4j2.disable.jmx=true -Dfile.encoding=UTF-8 com.neo4j.server.enterprise.EnterpriseEntryPoint --home-dir=/var/lib/neo4j --config-dir=/etc/neo4j
tr 4144 0.0 0.0 11076 708 pts/1 S+ 20:03 0:00 grep neo4j
√ ~ % ps aux | grep neo4j
neo4j 3698 0.0 1.0 1001632 80896 ? Ssl 19:54 0:00 mysqld --transaction-isolation=READ-COMMITTED --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=512 --innodb-rollback-on-timeout=OFF --innodb-lock-wait-timeout=50
tr 4149 0.0 0.0 11076 712 pts/1 S+ 20:03 0:00 grep neo4j
√ ~ % ps aux | grep neo4j
neo4j 3698 0.0 1.0 1001632 80896 ? Ssl 19:54 0:00 mysqld --transaction-isolation=READ-COMMITTED --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=512 --innodb-rollback-on-timeout=OFF --innodb-lock-wait-timeout=50
tr 4151 0.0 0.0 11076 644 pts/1 S+ 20:03 0:00 grep neo4j

```

Would appreciate your valuable feedback on this.

Thanks.

---

<div class="post-metadata">

**Author:** ![giuseppe\_villan](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/giuseppe_villan/32/11871_2.png) [@giuseppe\_villan](https://community.neo4j.com/u/giuseppe_villan)\
**Post date:** [March 22, 2022, 10:53am UTC](https://community.neo4j.com/t/cant-start-neo4j-server/53081/2 "2022-03-22T10:53:31Z")

</div>

@taylor.ren

If the problem is still present, can you share the `logs/neo4j.log` and `logs/debug.log` files?  
Maybe there is something interesting there.

---

<div class="post-metadata">

**Author:** ![dana\_canzano](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/dana_canzano/32/27392_2.png) [@dana\_canzano](https://community.neo4j.com/u/dana_canzano)\
**Post date:** [March 22, 2022, 8:44pm UTC](https://community.neo4j.com/t/cant-start-neo4j-server/53081/3 "2022-03-22T20:44:29Z")

</div>

@taylor.ren

1. how was Neo4j installed? tar file? debian ? or ??

2. from your `ps` output

```auto
root 4029 143 12.3 4741176 991296 pts/1 Sl 20:03 0:37 /usr/lib/jvm/java-11-openjdk-amd64/bin/java -cp /var/lib/neo4j/plugins/*:/etc/neo4j/*:/usr/share/neo4j/lib/* -XX:+UseG1GC -XX:-OmitStackTraceInFastThrow -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+TrustFinalNonStaticFields -XX:+DisableExplicitGC -XX:MaxInlineLevel=15 -XX:-UseBiasedLocking -Djdk.nio.maxCachedBufferSize=262144 -Dio.netty.tryReflectionSetAccessible=true -Djdk.tls.ephemeralDHKeySize=2048 -Djdk.tls.rejectClientInitiatedRenegotiation=true -XX:FlightRecorderOptions=stackdepth=256 -XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints -Dlog4j2.disable.jmx=true -Dfile.encoding=UTF-8 com.neo4j.server.enterprise.EnterpriseEntryPoint --home-dir=/var/lib/neo4j --config-dir=/etc/neo4j

```

is more in line with a running Neo4j database.

Ive never seen

```auto
neo4j 3698 0.0 1.0 1001632 80896 ? Ssl 19:54 0:00 mysqld --transaction-isolation=READ-COMMITTED --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci --max-connections=512 --innodb-rollback-on-timeout=OFF --innodb-lock-wait-timeout=50

```

and this process appears to respresent MySQL [https://dev.mysql.com/doc/refman/8.0/en/mysqld.html](https://dev.mysql.com/doc/refman/8.0/en/mysqld.html)