Question:I to be trying to download SQL Developer and when I shot to open up the forst screen and connect I gain this network adapter error:

java.sql.SQLException: Io exception: The Network Adapter can not develop the connection.

You are watching: Io error the network adapter could not establish the connection

How perform I solve thisNetwork Adapter could not create the link error?

Answer: Whenever you view aNetwork Adapter could not develop the connection, you have actually either the wrong SQL Developer URL or you have actually a basic SQL*Net connectivity issue! This error is most likely caused by one of these factors:

- You room using the not correct URL- The wrong harbor number or IP address (or DNS hold name) was used- The listener is not configured properly- The listener procedure (service) is no running. You can re-start it with the "lsnrctl start" command or on home windows by starting the listener service.

For a step by action checklist, view my note ontroubleshooting one Oracle link problem.

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