Hello Sachin
This is what I see from the trace file you have provided.
ORA-12541: TNS:no listener C *** ERROR => CONNECT failed with sql error '12541' [dbsloci.c 14646] C SAPUSER error or connect error 99=DBSL_ERR_DB, oerr=12541. B ***LOG BY2=> sql error 12541 performing CON [dbsh 1246] B ***LOG BY0=> ORA-12541: TNS:no listener [dbsh 1246] B ***LOG BY2=> sql error 12541
It seems that the Oracle Listener is not running.
Start Oracle Listener and then start the database.
The database should be running for SAP to start.
Regards
RB