ORA-12560 TNS : protocol adapter error; ORA-1033 Oracle initialization or shutdown in progress

prathameshpitale

Hello, I am using win XP with oracle 11g Express edition. I have a customized application written in c#.net and Oracle 11g express as backend. It was all working fine till today, But now I am getting error. While opening c# application I am getting ORA-1033 Oracle initialization or shutdown in progress and if I try from command prompt. sqlplus system/system123 Error : ORA-12560: TNS: protocol adapter error tnsnames.ora content

XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = user-pc)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)

EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)

ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)

Oracle Services in services.msc NAme Status oraclejobschedulerXE - OracleMTSRecoveryService - Started OracleServiceXE - Started OracleXEClrAgent - Started OracleXETBSListener - Started TNSPING O/p.

C:\Documents and Settings\User>tnsping localhost

TNS Ping Utility for 32-bit Windows: Version 11.2.0.2.0 - Production on 14-JUL-2
013 15:57:23

Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora

Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTO
COL=TCP)(HOST=127.0.0.1)(PORT=1521)))
OK (30 msec)

C:\Documents and Settings\User>

content of listener.ora

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = user-pc)(PORT = 1521))
)
)

DEFAULT_SERVICE_LISTENER = (XE)