The reason of 'channel out of buffers' and recipe

Frederic · 2025-03-28T08:12:32+00:00

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EMA (a later version)

Already have this in use <GuaranteedOutputBuffers value="5000"/>, but still encounter this occasionally. May I get advice on how to fix this?

2025-03-28 15:37:27 [] ERROR c.r.ema.access.OmmConsumerImpl - loggerMsg
ClientName: Consumer_1_1
Severity: Error
Text: Call to rsslReactorDispatch() failed. Internal sysError='0' Error text='channel out of buffers errorId=-4 errorText=channel out of buffers'.
loggerMsgEnd

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Accepted answers

Jirapongse

@Frederic

Normally Developer Community Forum is for how-to/general questions but your question seems to be more complex and requires investigation e.g. review source code, configuration, try to reproduce the problem etc.

I recommend the client raise a query through the premium support service. If the client is a named user, the client will see a link "Contact Premium Support" when the client is logged into the developer portal. For any difficulties submitting the query to us, please contact the client's LSEG account team or Sales team.

All comments

Jirapongse

@Frederic

Thank you for reaching out to us.

Please provide more information regarding this issue.

The version of EMA used by the application, such as Real-Time-SDK-2.2.3.L1.java or EMA Java 3.8.3.L1
The behavior of the application. For example: Did the application send post messages to ADS or RCC?
How often did the application send post messages?
The full configuration file

Typically, this issue happens with the consumer application that sends post messages to a server.

The client may try to increase the value of the GuaranteedOutputBuffers configuration.

Frederic

The EMA version is 3.8.0 (Java)
No
N/A
The full config file
<EmaConfig>
<ConsumerGroup>
<DefaultConsumer value="Consumer_1"/>
<ConsumerList>
<Consumer>
<Name value="Consumer_1"/>
<Channel value="Channel_1"/>

<Dictionary value="Dictionary_2"/>
</Consumer>
</ConsumerList>
</ConsumerGroup>
<ChannelGroup>
<ChannelList>
<Channel>
<Name value="Channel_1"/>




<ChannelType value="ChannelType::RSSL_ENCRYPTED"/>
<CompressionType value="CompressionType::None"/>
<GuaranteedOutputBuffers value="5000"/>
<InitializationTimeout value="15"/>


<Location value="ap-southeast"/>
<EnableSessionManagement value="1"/>
<ObjectName value=""/>
</Channel>
<Channel>
<Name value="Channel_2"/>




<ChannelType value="ChannelType::RSSL_ENCRYPTED"/>
<CompressionType value="CompressionType::None"/>
<GuaranteedOutputBuffers value="5000"/>


<Location value="us-east"/>
<EnableSessionManagement value="1"/>
<ObjectName value=""/>
</Channel>
</ChannelList>
</ChannelGroup>
<DictionaryGroup>
<DictionaryList>
<Dictionary>
<Name value="Dictionary_1"/>



<DictionaryType value="DictionaryType::ChannelDictionary"/>
</Dictionary>
<Dictionary>
<Name value="Dictionary_2"/>
<DictionaryType value="DictionaryType::FileDictionary"/>

<RdmFieldDictionaryFileName value="./RDMFieldDictionary"/>
<EnumTypeDefFileName value="./enumtype.def"/>
</Dictionary>
</DictionaryList>
</DictionaryGroup>
</EmaConfig>

Jirapongse

@Frederic

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