Hi Sivakoti,
From the logs
4 ETW000 [ dev trc,00000] ORA-12541: TNS:no listener
4 ETW000 68 1.207868
4 ETW000 [ dev trc,00000] SAPUSER error or connect error 99=DBSL_ERR_DB, oerr=12541. 40 1.207908
4 ETW000 [ dev trc,00000] DbSlConnect(con=0) -> orc=0, 99=DBSL_ERR_DB 33 1.207941
4 ETW000 [ dblink ,00000] ***LOG BY2=>sql error 12541 performing CON 79 1.208020
4 ETW000 [ dblink ,00000] ***LOG BY0=>ORA-12541: TNS:no listener
There is no Listener service running.
As you are on windows you may start the listener from Windows services or
Open command prompt and execute lsnrctl start.
Hope this helps.
Regards,
Deepak Kori