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Postgres IP Errors

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Customer getting error when trying to connect Postgres. Error: is Postgres running on 101.16.45.198
But Postgres is running on 101.16.45.199
Port 5598
But not on 5432
Listen address is set to '101.16.45.199'
How could we fix it?

Solution :
1.check the listen_address .
2.check your server IP using ifconfig.
3.check your application configuration file given IP address whether correct or not.

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