When i tried to connection to Oracle DB Connection using SQL
Developer, I got the following error
Vendor code
17002 to connect to SQLDeveloper
1.
Press Windows+R
2.
Type services.msc and
strike Enter
3.
Find all services
4.
Starting with ora start
these services and wait
5.
Then shut down the SQL Developer and re-start it otherwise it
will generate another error
An error was encountered performing the requested operation:
Listener refused the connection with the following error: ORA-12505,
TNS:listener does not currently know of SID given in connect descriptor Vendor
code 12505
Hope this helps :)
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