# Error: java.lang.OutOfMemoryError: Java heap space

**URL:** https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681
**Category:** Wowza Streaming Engine
**Tags:** server-administration
**Created:** [May 13, 2013, 4:44pm UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681 "2013-05-13T16:44:44Z")
**Posts on this page:** 6
**Page:** 1

<div class="post-metadata">

### Author: ![Denis\_Denis](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Denis\_Denis](https://community.wowza.com/u/Denis_Denis)
#### Post date: [May 13, 2013, 4:44pm UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/1 "2013-05-13T16:44:44Z")

</div>

Hello,

This bug has bitten our server some times last 30 days. Any idea what could be causing this?

Wowza Media Server 3.1.2.16 build3037

OS - Ubuntu 12.04

RAM - 16 Gb

CPU - Intel E3-1230V2 (Cores 4, Threads 8)

**Text of last error this morning**

> java.lang.OutOfMemoryError: Java heap space
> 
> at java.nio.HeapByteBuffer.(HeapByteBuffer.java:57)
> 
> at java.nio.ByteBuffer.allocate(ByteBuffer.java:331)
> 
> at org.apache.mina.common.SimpleByteBufferAllocator.allocate(Unknown Source)
> 
> at org.apache.mina.common.ByteBuffer.allocate(Unknown Source)
> 
> at org.apache.mina.transport.socket.nio.SocketIoProcessor.read(Unknown Source)
> 
> at org.apache.mina.transport.socket.nio.SocketIoProcessor.process(Unknown Source)
> 
> at org.apache.mina.transport.socket.nio.SocketIoProcessor.access$600(Unknown Source)
> 
> at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(Unknown Source)
> 
> at org.apache.mina.util.NamePreservingRunnable.run(Unknown Source)
> 
> at java.lang.Thread.run(Thread.java:722)
> 
> WARN server comment 2013-05-13 04:20:09 - - - - - 585159.535 - - - - - - - - Unexpected exception.
> 
> java.lang.OutOfMemoryError: Java heap space
> 
> WARN server comment 2013-05-13 04:21:40 - - - - - 585250.66 - - - - - - - - Unexpected exception.
> 
> java.lang.OutOfMemoryError: Java heap space
> 
> WARN server comment 2013-05-13 04:23:04 - - - - - 585351.49 - - - - - - - - nullUnexpected exception from exceptionCaught handler.
> 
> java.lang.OutOfMemoryError: Java heap space
> 
> WARN server comment 2013-05-13 04:24:03 - - - - - 585396.621 - - - - - - - - Unexpected exception.
> 
> java.lang.OutOfMemoryError: Java heap space
> 
> WARN server comment 2013-05-13 04:23:42 - - - - - 585377.031 - - - - - - - - nullUnexpected exception from exceptionCaught handler.
> 
> java.lang.NullPointerException
> 
> **[install-dir]/bin/setenv.bat**
> 
> > \_EXECJAVA=java
> > 
> > JAVA\_OPTS=“-Xmx8000M”
> > 
> > # Uncomment to run server environment (faster), Note: will only work if server VM install, comes with JDL
> > 
> > JAVA\_OPTS=“$JAVA\_OPTS -server”
> > 
> > # Can be a better GC setting to avoid long pauses
> > 
> > JAVA\_OPTS=“$JAVA\_OPTS -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewSize=512m”
> > 
> > # Uncomment to log debug garbage collection information
> > 
> > #NOW=$(date +“%Y-%m-%d-%H-%M”)
> > 
> > JAVA\_OPTS=“$JAVA\_OPTS -verbose:gc -Xloggc:”/usr/local/WowzaMediaServer/logs/gc\_$NOW.log" -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC"
> > 
> > # Uncomment to write heap dump on OutOfMemoryError
> > 
> > #JAVA\_OPTS=“$JAVA\_OPTS -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/usr/local/WowzaMediaServer”
> > 
> > # Uncomment to force Java to use specific language settings
> > 
> > #JAVA\_OPTS=“$JAVA\_OPTS -Duser.language=en -Duser.country=US -Dfile.encoding=Cp1252”
> > 
> > # Uncomment to fix multicast crosstalk problem when streams share multicast port
> > 
> > JAVA\_OPTS=“$JAVA\_OPTS -Djava.net.preferIPv4Stack=true”
> > 
> > WMSAPP\_HOME=/usr/local/WowzaMediaServer
> > 
> > WMSCONFIG\_HOME=/usr/local/WowzaMediaServer
> > 
> > WMSCONFIG\_URL=
> > 
> > export WMSAPP\_HOME WMSCONFIG\_HOME JAVA\_OPTS \_EXECJAVA
> 
> **[install-dir]/conf/VHost.xml**
> 
> ```auto
> <Root>
> <VHost>
> <HostPortList>
> <HostPort>
> <ProcessorCount>4</ProcessorCount>
> <IpAddress>*</IpAddress>
> <!-- Separate multiple ports with commas -->
> <!-- 80: HTTP, RTMPT -->
> <!-- 554: RTSP -->
> <Port>1935</Port>
> <SocketConfiguration>
> <ReuseAddress>true</ReuseAddress>
> <!-- suggested settings for video on demand applications -->
> <ReceiveBufferSize>65000</ReceiveBufferSize>
> <SendBufferSize>65000</SendBufferSize>
> <!-- suggest settings for low latency chat and video recording applications
> <ReceiveBufferSize>32000</ReceiveBufferSize>
> <SendBufferSize>32000</SendBufferSize>
> -->
> <KeepAlive>true</KeepAlive>
> <!-- <TrafficClass>0</TrafficClass> -->
> <!-- <OobInline>false</OobInline> -->
> <!-- <SoLingerTime>-1</SoLingerTime> -->
> <!-- <TcpNoDelay>false</TcpNoDelay> -->
> <AcceptorBackLog>100</AcceptorBackLog>
> </SocketConfiguration>
> <HTTPStreamerAdapterIDs>cupertinostreaming,smoothstreaming,sanjosestreaming,dvrchunkstreaming</HTTPStreamerAdapterIDs>
> <HTTPProviders>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPCrossdomain</BaseClass>
> <RequestFilters>*crossdomain.xml</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPClientAccessPolicy</BaseClass>
> <RequestFilters>*clientaccesspolicy.xml</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPProviderMediaList</BaseClass>
> <RequestFilters>*jwplayer.rss|*jwplayer.smil|*medialist.smil|*manifest-rtmp.f4m</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPServerVersion</BaseClass>
> <RequestFilters>*</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> </HTTPProviders>
> </HostPort>
> 			
> <!-- 443 with SSL -->
> <!--
> <HostPort>
> <ProcessorCount>4</ProcessorCount>
> <IpAddress>*</IpAddress>
> <Port>443</Port>
> <SSLConfig>
> <KeyStorePath>${com.wowza.wms.context.VHostConfigHome}/conf/keystore.cert</KeyStorePath>
> <KeyStorePassword>[password]</KeyStorePassword>
> <KeyStoreType>JKS</KeyStoreType>
> <SSLProtocol>TLS</SSLProtocol>
> <Algorithm>SunX509</Algorithm>
> <CipherSuites></CipherSuites>
> <Protocols></Protocols>
> </SSLConfig>
> <SocketConfiguration>
> <ReuseAddress>true</ReuseAddress>
> <ReceiveBufferSize>24000</ReceiveBufferSize>
> <SendBufferSize>65000</SendBufferSize>
> <KeepAlive>true</KeepAlive>
> <AcceptorBackLog>100</AcceptorBackLog>
> </SocketConfiguration>
> <HTTPStreamerAdapterIDs>cupertinostreaming,smoothstreaming,sanjosestreaming,dvrchunkstreaming</HTTPStreamerAdapterIDs>
> <HTTPProviders>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPCrossdomain</BaseClass>
> <RequestFilters>*crossdomain.xml</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPClientAccessPolicy</BaseClass>
> <RequestFilters>*clientaccesspolicy.xml</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPProviderMediaList</BaseClass>
> <RequestFilters>*jwplayer.rss|*jwplayer.smil|*medialist.smil|*manifest-rtmp.f4m</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPServerVersion</BaseClass>
> <RequestFilters>*</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> </HTTPProviders>
> </HostPort>
> -->
> 			
> <!-- Admin HostPort -->
> <HostPort>
> <ProcessorCount>1</ProcessorCount>
> <IpAddress>*</IpAddress>
> <Port>8086</Port>
> <SocketConfiguration>
> <ReuseAddress>true</ReuseAddress>
> <ReceiveBufferSize>16000</ReceiveBufferSize>
> <SendBufferSize>16000</SendBufferSize>
> <KeepAlive>true</KeepAlive>
> <AcceptorBackLog>100</AcceptorBackLog>
> </SocketConfiguration>
> <HTTPStreamerAdapterIDs></HTTPStreamerAdapterIDs>
> <HTTPProviders>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.streammanager.HTTPStreamManager</BaseClass>
> <RequestFilters>streammanager*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPServerInfoXML</BaseClass>
> <RequestFilters>serverinfo*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPConnectionInfo</BaseClass>
> <RequestFilters>connectioninfo*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPConnectionCountsXML</BaseClass>
> <RequestFilters>connectioncounts*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.transcoder.httpprovider.HTTPTranscoderThumbnail</BaseClass>
> <RequestFilters>transcoderthumbnail*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPProviderMediaList</BaseClass>
> <RequestFilters>medialist*</RequestFilters>
> <AuthenticationMethod>admin-digest</AuthenticationMethod>
> </HTTPProvider>
> <HTTPProvider>
> <BaseClass>com.wowza.wms.http.HTTPServerVersion</BaseClass>
> <RequestFilters>*</RequestFilters>
> <AuthenticationMethod>none</AuthenticationMethod>
> </HTTPProvider>
> </HTTPProviders>
> </HostPort>
> 		
> </HostPortList>
> 		
> <HTTPStreamerAdapters>
> <HTTPStreamerAdapter>
> <ID>smoothstreaming</ID>
> <Name>smoothstreaming</Name>
> <Properties>
> </Properties>
> </HTTPStreamerAdapter>
> <HTTPStreamerAdapter>
> <ID>cupertinostreaming</ID>
> <Name>cupertinostreaming</Name>
> <Properties>
> </Properties>
> </HTTPStreamerAdapter>
> <HTTPStreamerAdapter>
> <ID>sanjosestreaming</ID>
> <Name>sanjosestreaming</Name>
> <Properties>
> </Properties>
> </HTTPStreamerAdapter>
> <HTTPStreamerAdapter>
> <ID>dvrchunkstreaming</ID>
> <Name>dvrchunkstreaming</Name>
> <Properties>
> </Properties>
> </HTTPStreamerAdapter>
> </HTTPStreamerAdapters>
> <HandlerThreadPool>
> <PoolSize>120</PoolSize>
> </HandlerThreadPool>
> <TransportThreadPool>
> <PoolSize>80</PoolSize>
> </TransportThreadPool>
> <IdleWorkers>
> <WorkerCount>4</WorkerCount>
> <CheckFrequency>50</CheckFrequency>
> <MinimumWaitTime>5</MinimumWaitTime>
> </IdleWorkers>
> <NetConnections>
> <ProcessorCount>4</ProcessorCount>
> <IdleFrequency>250</IdleFrequency>
> <SocketConfiguration>
> <ReuseAddress>true</ReuseAddress>
> <ReceiveBufferSize>65000</ReceiveBufferSize>
> <SendBufferSize>24000</SendBufferSize>
> <KeepAlive>true</KeepAlive>
> <!-- <TrafficClass>0</TrafficClass> -->
> <!-- <OobInline>false</OobInline> -->
> <!-- <SoLingerTime>-1</SoLingerTime> -->
> <!-- <TcpNoDelay>false</TcpNoDelay> -->
> <AcceptorBackLog>100</AcceptorBackLog>
> </SocketConfiguration>
> </NetConnections>
> <HTTPTunnel>
> <KeepAliveTimeout>2000</KeepAliveTimeout>
> </HTTPTunnel>
> <Client>
> <ClientTimeout>90000</ClientTimeout>
> <IdleFrequency>250</IdleFrequency>
> </Client>
> <!-- RTP/Authentication/Methods defined in Authentication.xml. Default setup includes; none, basic, digest -->
> <RTP>
> <IdleFrequency>75</IdleFrequency>
> <DatagramConfiguration>
> <Incoming>
> <ReuseAddress>true</ReuseAddress>
> <ReceiveBufferSize>1024000</ReceiveBufferSize>
> <SendBufferSize>65000</SendBufferSize>
> <!-- <MulticastBindToAddress>true</MulticastBindToAddress> -->
> <!-- <MulticastInterfaceAddress>192.168.1.22</MulticastInterfaceAddress> -->
> <!-- <TrafficClass>0</TrafficClass> -->
> <MulticastTimeout>50</MulticastTimeout>
> <DatagramMaximumPacketSize>4096</DatagramMaximumPacketSize>
> </Incoming>
> <Outgoing>
> <ReuseAddress>true</ReuseAddress>
> <ReceiveBufferSize>65000</ReceiveBufferSize>
> <SendBufferSize>65000</SendBufferSize>
> <!-- <MulticastBindToAddress>true</MulticastBindToAddress> -->
> <!-- <MulticastInterfaceAddress>192.168.1.22</MulticastInterfaceAddress> -->
> <!-- <TrafficClass>0</TrafficClass> -->
> <MulticastTimeout>50</MulticastTimeout>
> <DatagramMaximumPacketSize>4096</DatagramMaximumPacketSize>
> </Outgoing>
> </DatagramConfiguration>
> <UnicastIncoming>
> <ProcessorCount>4</ProcessorCount>
> </UnicastIncoming>
> <UnicastOutgoing>
> <ProcessorCount>8</ProcessorCount>
> </UnicastOutgoing>
> <MulticastIncoming>
> <ProcessorCount>4</ProcessorCount>
> </MulticastIncoming>
> <MulticastOutgoing>
> <ProcessorCount>4</ProcessorCount>
> </MulticastOutgoing>
> </RTP>
> <Application>
> <ApplicationTimeout>60000</ApplicationTimeout>
> <PingTimeout>12000</PingTimeout>
> <ValidationFrequency>20000</ValidationFrequency>
> <MaximumPendingWriteBytes>0</MaximumPendingWriteBytes>
> <MaximumSetBufferTime>60000</MaximumSetBufferTime>
> </Application>
> <StartStartupStreams>true</StartStartupStreams>
> <!-- Properties defined here will be added to the IVHost.getProperties() collection -->
> <Properties>
> </Properties>
> </VHost>
> </Root>
> 
> ```
> 
> **[install-dir]/bin/wms.sh**
> 
> ulimit -n 20000
> 
> **[install-dir]/bin/startup.sh**
> 
> ulimit -n 20000 \> /dev/null 2\>&1
> 
> **/etc/sysctl.conf**
> 
> fs.file-max=20000
> 
> Thanks!

---

<div class="post-metadata">

### Author: ![Denis\_Denis](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Denis\_Denis](https://community.wowza.com/u/Denis_Denis)
#### Post date: [May 14, 2013, 11:03am UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/2 "2013-05-14T11:03:25Z")

</div>

java version “1.7.0\_15”

OpenJDK 64-bit Server VM (build 23.7-b01, mixed mode)

---

<div class="post-metadata">

### Author: ![Denis\_Denis](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Denis\_Denis](https://community.wowza.com/u/Denis_Denis)
#### Post date: [May 17, 2013, 11:16pm UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/3 "2013-05-17T23:16:02Z")

</div>

Hello!

> Your server is not tuned. You have allocated more memory but thats about it. Please see the tuning guide here
> 
> [Tune Wowza Streaming Engine for performance](https://www.wowza.com/docs/general-tuning)

We’ve tuned Wowza according to this guide: [Tune Wowza Streaming Engine for performance](https://www.wowza.com/docs/general-tuning)

There is the list of changes we’ve made:

**1. In Performance Tuning Guide:**

“It is generally best to run the most recent Sun Java JDK. It is best to run a 64-bit operating system with the 64-bit Java VM”

Now in our server:

java version “1.7.0\_21”

Java™ SE Runtime Environment (build 1.7.0\_21-b11)

Java HotSpot™ 64-Bit Server VM (build 23.21-b01, mixed mode)

Ubuntu 12.10 (x86-64)

**2. In Performance Tuning Guide:**

“It is best to run the -server version of the Java VM”

Now in our [install-dir]/bin/setenv.sh:

> JAVA\_OPTS=“$JAVA\_OPTS -server”

**3. In Performance Tuning Guide:**

“If you are running the 64-bit version of the Java VM … and have 16 GB or more RAM, we suggest a heap size of 8000 MB”

Now in our [install-dir]/bin/setenv.sh:

> JAVA\_OPTS=“-Xmx8000M”

**4. In Performance Tuning Guide:**

“Garbage collection (GC) tuning in Java is a tricky subject. What works best in one server setup may not work in another. Through trial-and-error and customer feedback, we have several suggested approaches”

So, we have 3 variants:

variant a. “We strongly recommend No Additional Settings. The default -server tuning works quite well for many streaming situations, so in most cases this tuning works great without additional settings.”

variant b. “The Concurrent Collector”:

JAVA\_OPTS=“$JAVA\_OPTS -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewSize=512m”

variant c. “Experimental: Garbage-First garbage collector (G1)”:

JAVA\_OPTS=“$JAVA\_OPTS -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC”

Now using variant b:

In our [install-dir]/bin/setenv.sh:

> JAVA\_OPTS=“$JAVA\_OPTS -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewSize=512m”

**5. In Performance Tuning Guide:**

“For low-latency chat applications, it is best to use smaller socket buffer sizes (16000 bytes for read and write)”

Now in our [install-dir]/conf/VHost.xml:

> 16000
> 
> 16000

**6. In Performance Tuning Guide:**

“On Linux, increase the maximum number of file descriptors.”

Now in our [install-dir]/bin/wms.sh:

> ulimit -n 20000

Now in our [install-dir]/bin/startup.sh:

> ulimit -n 20000 \> /dev/null 2\>&1

“On some versions of Linux, there is also a limit in the kernel that may need to be increased.”

Now in our /etc/sysctl.conf:

> fs.file-max=20000

**7. In Performance Tuning Guide:**

“On Linux, switch to using the Anticipatory elevator (as) elevator algorithm.”

Haven’t do it.

**8. In Performance Tuning Guide:**

“On Linux, mount your disk with the noatime option”

Done.

**9. In Performance Tuning Guide:**

“The [total-core-count] refers to the total number of CPU cores in your server… If your server supports hyper-threading, then use the total number of threads. In the above example, if hyper-threading is available, then the total number of threads is: 2 (processor) x 4 (cores) x 2 (threads per core) = 16”

Now our CPU is Intel E3-1230V2 (1 processor x 4 cores х 8 threads per core)

Now in our [install-dir]/conf/VHost.xml:

> 16
> 
> 1
> 
> 480
> 
> 320
> 
> 16
> 
> 8
> 
> 16
> 
> 8
> 
> 8

**10. In Performance Tuning Guide:**

“Running Multiple Virtual Hosts:”

We don’t use it.

**11. In Performance Tuning Guide:**

“If you are not doing low latency streaming…”

We’ve done it already in step 5.

**12. In Performance Tuning Guide:**

“If you are having problems with multiple incoming multicast streams interfering with each other on Linux you may need to set the Java property java.net.preferIPv4Stack to true”

Now in our [install-dir]/bin/setenv.sh:

> JAVA\_OPTS=“$JAVA\_OPTS -Djava.net.preferIPv4Stack=true”

What settings we have change to get rid of “OutOfMemory” error?

Note:

When we using variant a from step 4, the bug has bitten our server each ~6 hours. We have dump ~6Gb which can send to your support.

When we using variant b from step 4, the bug has bitten our server each ~7 days.

We can also send to you archives with our logs, conf, heap dump and else useful data to solve this problem.

> I would also recommend upgrading to 3.5.2 to make sure any fixes from the version you are running are available to you.

We’ve tried 3.5.2.05 but got similar error each ~6 hours, so we rolled away to 3.1.2.

Thanks!

---

<div class="post-metadata">

### Author: ![Denis\_Denis](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Denis\_Denis](https://community.wowza.com/u/Denis_Denis)
#### Post date: [May 21, 2013, 1:29am UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/4 "2013-05-21T01:29:40Z")

</div>

Today we’ve removed

java version “1.7.0\_15” OpenJDK 64-bit Server VM (build 23.7-b01, mixed mode)

and installed

java version “1.7.0\_21”

Java™ SE Runtime Environment (build 1.7.0\_21-b11)

Java HotSpot™ 64-Bit Server VM (build 23.21-b01, mixed mode)

---

<div class="post-metadata">

### Author: ![Andrew\_Kennedy1](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@Andrew\_Kennedy1](https://community.wowza.com/u/Andrew_Kennedy1)
#### Post date: [May 14, 2013, 12:25am UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/5 "2013-05-14T00:25:28Z")

</div>

Hi,

Your server is not tuned. You have allocated more memory but thats about it. Please see the tuning guide here

[https://www.wowza.com/docs/general-tuning](https://www.wowza.com/docs/general-tuning)

I would also recommend upgrading to 3.5.2 to make sure any fixes from the version you are running are available to you.

Andrew.

---

<div class="post-metadata">

### Author: ![Roger\_Littin1](https://avatars.discourse-cdn.com/v4/letter/r/c89c15/32.png) [@Roger\_Littin1](https://community.wowza.com/u/Roger_Littin1)
#### Post date: [May 21, 2013, 10:32am UTC](https://community.wowza.com/t/error-java-lang-outofmemoryerror-java-heap-space/37681/6 "2013-05-21T10:32:28Z")

</div>

Hi Denis,

Can you please upload the heap dump to somewhere that we can download it and then open ticket at support@wowza.com with a link to the download.

Please also zip up your conf folder and recent logs and also include a reference to this forum post.

Roger.