ORA-12500: TNS:listener failed to start a dedicated server process

[adewri]

--Change the listener to

# LISTENER.ORA Network Configuration File: D:\ora92\network\admin\listener.ora

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1521)
)
)
)
)

---- no need to enter the entry for 803 if you are using the same listener name and port.

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = TEST92)
(ORACLE_HOME = D:\ora92)
)
(SID_DESC =
(SID_NAME = DCC1)
(ORACLE_HOME = C:\ORANT)
)
)

-- and change tns to

# TNSNAMES.ORA Network Configuration File: D:\ora92\network\admin\tnsnames.ora
DCC1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1521)
)
)
(CONNECT_DATA = (SID = DCC1)
)
)

TEST92 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1521)
)
)
(CONNECT_DATA = (SERVICE_NAME = TEST92)
)
)

I did put TNS_ADMIN to ora92 tnsnames.ora
--- point this to D:\ora92\network\admin (directory) not the tnsnames.ora file