Thanks for the question, Xudong.
Asked: January 25, 2018 - 5:42 am UTC
Last updated: January 25, 2018 - 6:39 am UTC
Version: 4.1.4
Viewed 1000+ times
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I install SQL Developer and log in my local server SYSTEM once. but today when I try to log in, is says error:
An error was encountered performing the requested operation:
ORA-12560: TNS:protocol adapter error
12560. 00000 - "TNS:protocol adapter error"
*Cause: A generic protocol adapter error occurred.
*Action: Check addresses used for proper protocol specification. Before
reporting this error, look at the error stack and check for lower level
transport errors. For further details, turn on tracing and reexecute the
operation. Turn off tracing when the operation is complete.
Vendor code 12560
is anyone can help me on it?
thanks
and Connor said...
SQL Developer will connect to a database, so you need the details for that database.
That means
- the host the database is running
- the port# the host is listening to allow access to the database
- the database name
Do you have those details ?
Here's a couple of videos that might help you
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