Configuring JBoss EAP Pool Attributes

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Configuring JBoss EAP Pool Attributes

JBoss Enterprise Application Platform can deploy and manage any Java application you have as part of your stack — and to really optimize our performance, we want to leverage one of JBoss EAP's principal tools, connection pools. Connection pools work with datasources and resource adapters to reduce the cost of connections by pooling all connections available on the application. In this lab, we configure the connection pools for two datasources, both on the CLI and the Console.

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Lab Info

Level

Beginner

Last updated

Sep 23, 2025

Duration

15m

Challenge

Update the ExampleDS
1. Log in to the HAL Management Console using the username admin and the password pinehead.
2. Navigate to Configuration > Subsystems > Datasources and Drivers, then select View for ExampleDS.
3. Select the Pools tab and click Edit.
4. Set the Initial Pool Size to 1, the Minimum Pool Size to 1, and the Maximum Pool Size to 10. Enable strict minimums. Save.

Challenge

Update the MySQLDS

Move to the CLI and access the JBoss EAP home directory:

cd /opt/jboss-eap

Access the JBoss CLI:

sudo ./bin/jboss-cli.sh
connect

Add the minimum value:

/subsystem=datasources/data-source=MySQLDS/:write-attribute(name=min-pool-size,value=5)

Enable pool prefilling:

/subsystem=datasources/data-source=MySQLDS/:write-attribute(name=pool-prefill,value=true)

Challenge

Restart the Service
1. Exit the CLI:
```
exit
```
1. For changes to take effect, we must restart the service:
```
sudo systemctl restart jboss-eap-rhel
```

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