Status : Failure - Test failed: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found

Question

I have got the problem with my Oracle Database Server that give me an error message Status : Failure - Test failed: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found . I am a newbie at using Oracle Database Server. I just found the way how to fix that problem using these code;

SELECT * FROM v$resource_limit WHERE resource_name IN ('processes','sessions');
ALTER system SET processes=300 scope=spfile;

When I tried it, I got this Query Result

But when I tried to increase the number of processes/sessions, it did not help me so much. Does anyone here could help me to fix this problem. Thank you in advance

Answer 1

您必须在ALTER system SET processes=300 scope=spfile;之后重新启动Oracle RDBMS ALTER system SET processes=300 scope=spfile;