Here’s an issue I had to resolve on my PC when I switched Wi-Fi networks. Firing up Application Designer would result in a TNS:no listener error. While the primary troubleshooting step would be to look for firewall restrictions on the Port being used, this was something different. Even after switching off firewall on my PC, the same error kept appearing.
I had downloaded HCM PUM image 16 on a different network and installed it on the same network as well. But, when I tried to start the App server on another network, the Application Designer failed to launch with the aforementioned error message.
PeopleTools version : 8.55.01
PeopleSoft Application version : HCM 9.2
Host OS : Windows 10 Home 64-bit
Provided below are the steps that I had followed to resolve this issue.
You can also verify the issue with the TNSPing Utility from the Command prompt on Windows.
Possible reason would be that the IP address would have changed. Login to the App server and type ifconfig to find out the current IP address, against the inet addr field.
Modify the IP address in the hosts file as well as the TNSNames.ora file as well
Try pinging the database/service name using the TNSPing utility again:
Hope this helps! Have fun! 🙂