Originally posted by jmodic
You will allways get this error (12560) if your database service is not running. You must first start the service before you are able to connect to that instance (even to an idle one) with svrmgrl.
Oracle service and TNSlistner service both are starting now but still get the same error from within svrmgrl
ORA-12560: TNSrotocol adapter error

I get this error when trying to connect using sqlplus (server or client)
ORA-12537: TNS:connection closed

Here is the staus of listener:
------------------------------

LSNRCTL> services
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=usc1-as04)(PORT=1521)))
Services Summary...
PLSExtProc has 1 service handler(s)
DEDICATED SERVER established:0 refused:0
LOCAL SERVER
gen0301p has 1 service handler(s)
DEDICATED SERVER established:2 refused:0
LOCAL SERVER
gen0301p has 2 service handler(s)
DEDICATED SERVER established:1 refused:0
LOCAL SERVER
DISPATCHER established:0 refused:0 current:0 max:1022 state:ready
D000
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=usc1-as04.araccel.com)(PORT=1093
))(PRESENTATION=oracle.aurora.server.SGiopServer)(SESSION=RAW))
Presentation: oracle.aurora.server.SGiopServer
The command completed successfully