How to enable the T3 Protocol in Weblogic Servers in Version 12.
Method 1: Enable T3 Using Default Listen Port (Recommended)
Step 1: Login to WebLogic Admin Console
Open the WebLogic Console:
http://<AdminHost>:7001/console
Example:
http://<host>:7001/console
Step 2: Navigate to Managed Server
Go to:
Environment → Servers
Select the Managed Server.
Example:
ManagedServer1
Step 3: Enable Listen Port
Navigate to:
Configuration → General
Verify the following settings:
| Setting | Value |
|---|---|
| Listen Port Enabled | Checked |
| Listen Address | Hostname or IP Address |
| Listen Port | Example: 7003 |
Example:
Listen Address : 192.168.1.10
Listen Port : 7003
Save the changes.
Step 4: Restart the Managed Server
Restart the managed server for the changes to take effect.
Step 5: Verify T3 is Working
From another machine/server:
telnet <host> <port>
Example:
telnet 192.168.1.10 7003
OR
nc -zv 192.168.1.10 7003
If the port is reachable, T3 is active.
Step 6: Verify T3 URL
T3 URL format:
t3://hostname:7003
Example:
t3://192.168.1.10:7003
Method 2: Create Dedicated T3 Network Channel (Optional)
Step 1: Open Managed Server
Environment → Servers → ManagedServer1
Step 2: Open Protocols
Navigate to:
Protocols → Channels
Click:
New
Step 3: Create Channel
| Field | Example |
|---|---|
| Name | T3Channel |
| Protocol | t3 |
Click Next.
Step 4: Configure Channel
| Field | Value |
|---|---|
| Listen Address | 192.168.1.10 |
| Listen Port | 9001 |
Save the configuration.
Step 5: Activate Changes
Click:
Activate Changes
Step 6: Restart Managed Server
Restart the server.
Step 7: Verify Dedicated T3 Channel
telnet 192.168.1.10 9001
T3 URL:
t3://192.168.1.10:9001
Firewall Configuration (Linux)
Ensure the port is open:
firewall-cmd --add-port=7003/tcp --permanent
firewall-cmd --reload
Common Issues
| Issue | Possible Cause |
|---|---|
| T3 Connection Failed | Firewall Blocking Port |
| Port Not Reachable | Wrong Listen Address |
| T3 URL Not Working | Managed Server Not Restarted |
| Connection Timeout | NAT / Proxy Restriction |
Recommended Configuration
| Component | Port |
|---|---|
| Admin Server | 7001 |
| Managed Server 1 | 7003 |
| Managed Server 2 | 7005 |
Use:
t3://host:managed_server_port
without additional network channels unless specifically required.
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