# Getting Error in Nexus.log too many open files

## post by Jagdish_Shripati on Apr 27

Hi Team,

We are running Nexus 3.29 OSS and got below error in nexus.log

Caused by: java.io.FileNotFoundException: **/app/nexus_home/sonatype-work/nexus3/db/frozen.marker (Too many open files)**

at java.io.FileInputStream.open0(Native Method)

at java.io.FileInputStream.open(FileInputStream.java:195)

at java.io.FileInputStream.(FileInputStream.java:138)

at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:916)

at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3351)

at org.sonatype.nexus.orient.internal.freeze.LocalDatabaseFrozenStateManager.readMarkerFile(LocalDatabaseFrozenStateManager.java:122)

… 104 common frames omitted

2026-04-27 06:30:01,536+0800 ERROR [quartz-15-thread-13] *SYSTEM org.sonatype.nexus.blobstore.file.internal.FileBlobStoreMetricsStore - Blob store metrics cannot be accessed

**org.sonatype.nexus.blobstore.BlobStoreMetricsNotAvailableException: java.nio.file.FileSystemException: /app/test: Too many open files**

at org.sonatype.nexus.blobstore.file.internal.FileBlobStoreMetricsStore.backingFiles(FileBlobStoreMetricsStore.java:98)

at org.sonatype.nexus.blobstore.BlobStoreMetricsStoreSupport.getMetrics(BlobStoreMetricsStoreSupport.java:192)

at org.sonatype.nexus.blobstore.file.internal.FileBlobStoreMetricsStore$$EnhancerByGuice$$1280e16a.CGLIB$getMetrics$10()

at org.sonatype.nexus.blobstore.file.internal.FileBlobStoreMetricsStore$$EnhancerByGuice$$1280e16a$$FastClassByGuice$$200cb1f.invoke()

at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)

java.io.IOException: Too many open files

java.io.IOException: Too many open files

Post above error, nexus instance url was giving error 404 error, URL request time out. Could you please let me know how to fix the error?

Below ulimit -n set for user

ulimit -n

65536

## post by mpiggott on Apr 27

Your system is applying a limit to the number of files that Nexus can open, you’ll need to update it.

This support document is for Nexus 2, but the instructions for the various OSes may be helpful - [https://support.sonatype.com/hc/en-us/articles/213465218-The-nexus-log-file-is-full-of-too-many-open-files-exceptions-how-can-I-fix-this](https://support.sonatype.com/hc/en-us/articles/213465218-The-nexus-log-file-is-full-of-too-many-open-files-exceptions-how-can-I-fix-this)

## post by Jagdish_Shripati on Apr 28

Hi Matthew,

As I mentioned, we are using Nexus 3.29 and we already have below configured for user.

ulimit -Hn

65536

ulimit -Sn

65536

We are running Nexus process as below not through service.

./nexus start

./nexus stop

As we already have configured ulimit to 65536, not sure why still getting **Too many open files** error

**org.sonatype.nexus.blobstore.BlobStoreMetricsNotAvailableException: java.nio.file.FileSystemException: /app/test: Too many open files**

Could you please help to check if any other things we need to configure to avoid this error.

Thanks,

Jagdish

## post by mpiggott on Apr 28

I can only suggest the link provided before, and to ensure the ulimit was applied to the service.

While I doubt it is the cause 3.29 is extremely old.

## post by laurencet on Apr 28

Can you show the output of ‘`cat /proc/<PID>/limits'` (PID of Nexus)?

Also as Matthew pointed out, this is a very old version of Nexus and we have had bugs in the past related to file handle leaks. It may be quicker to upgrade and see how that goes before troubleshooting further.

## post by Jagdish_Shripati on Apr 29

Hi Laurence,

Below is the output of ‘cat /proc/3587311/limits’ (PID of Nexus)

cat /proc/3587311/limits

Limit		Soft Limit	Hard Limit	Units

Max cpu time		unlimited	unlimited	seconds

Max file size		unlimited	unlimited	bytes

Max data size		unlimited	unlimited	bytes

Max stack size		8388608	unlimited	bytes

Max core file size		unlimited	unlimited	bytes

Max resident set		unlimited	unlimited	bytes

Max processes		65536	65536	processes

Max open files		65536	65536	files

Max locked memory		8388608	8388608	bytes

Max address space		unlimited	unlimited	bytes

Max file locks		unlimited	unlimited	locks

Max pending signals		254973	254973	signals

Max msgqueue size		819200	819200	bytes

Max nice priority		0	0

Max realtime priority		0	0

Max realtime timeout		unlimited	unlimited	us

Yes, we know Nexus version is too old. For now, we are planning to upgrade to 3.70.x as orient db support till 3.70.x version only. Post that we are planning to buy license, so that we can further do upgrade from 3.70.x to latest version with postgresql database.

Thanks,

Jagdish