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

[adewri]

I have made the changes, try this

ORA8.0.3:LISTENER
################
# Filename......: listener.ora
# Node..........: local.world
# Date..........: 24-MAY-94 13:23:20
################
LISTENER1 =
(ADDRESS_LIST =
(ADDRESS=
(PROTOCOL= TCP)(Host= 172.18.50.37)(Port= 1526)
)
)

SID_LIST_LISTENER1 =
(SID_LIST =
(SID_DESC =
(SID_NAME = DCC1)(ORACLE_HOME = C:\ORANT)
)
)

ORA8.0.3 TNSNAMES.ORA

DCC1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1526))
)
(CONNECT_DATA = (SID = DCC1)
)
)
TEST92 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1521))
)
(CONNECT_DATA = (SERVICE_NAME = TEST92)
)
)

ORA92 LISTENER

# LISTENER.ORA Network Configuration File: D:\ora92\network\admin\listener.ora
# Generated by Oracle configuration tools.

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

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

ORA92 TNSNAMES.ORA

# TNSNAMES.ORA Network Configuration File: D:\ora92\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

DCC1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.18.50.37)(PORT = 1526))
)
(CONNECT_DATA =
(SID = DCC1)
)
)

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