Connecting to Oracle XE via regular 10g client - ORA-12514

I have had the 10g client installled on my computer for a while, for developing against our company Oracle databases. I have now installed the XE database locally on my computer so I can do some local development - according to the information I've been able to find the two should live side-by-side without problem.
I can still connect to our company databases just fine, but I can't get a connection to the local XE database at all.
I've added this line to tnsnames.ora:
XE = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))(CONNECT_DATA = (SERVICE_NAME = XE)))
The error I'm getting connecting is:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Thanks for any help!

Hi,
I did mean duplicates even between different tnsnames.ora files.
As I understand, if you XE works, you should not need do anything for that tnsnames.ora.
Just find how entry should be for client.
BTW, what tool you will use for XE? Do you need client?
E.g. if you use SQL Developer, you do not need client or set anything to tnsnames.ora
Regards,
Jari
Edited by: jarola on Jan 18, 2011 2:30 PM
BTW, it might good to search Instant Client forums if you find help there.
If you do not find answer, then it might good idea post question there.
At least for me this is more client question than XE.
Instant Client
But as I understand it should not be any problem use 10g client for XE.
I just have never done that =)

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SQL*Plus: Release 11.2.0.3.0 Production on Fri May 25 15:14:13 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
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SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node racnode1
SCAN VIP scan2 is enabled
SCAN VIP scan2 is running on node racnode2
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Address:     172.20.0.15#53
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Address: 172.20.0.213
Name:     rac-scan.xxx.local
Address: 172.20.0.214
Name:     rac-scan.xxx.local
Address: 172.20.0.210
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eth0 Link encap:Ethernet HWaddr 00:1A:A0:96:A6:B2
inet addr:172.20.0.221 Bcast:172.20.0.255 Mask:255.255.255.0 <--- public ip
inet6 addr: fe80::21a:a0ff:fe96:a6b2/64 Scope:Link
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RX packets:9458999 errors:0 dropped:0 overruns:0 frame:0
TX packets:14852588 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4001261935 (3.7 GiB) TX bytes:1196090235 (1.1 GiB)
Interrupt:20 Memory:fdfc0000-fdfe0000
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inet addr:172.20.0.212 Bcast:172.20.0.255 Mask:255.255.255.0 <---- VIP
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:fdfc0000-fdfe0000
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inet addr:172.20.0.214 Bcast:172.20.0.255 Mask:255.255.255.0 <---- one of the SCAN ips
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:20 Memory:fdfc0000-fdfe0000
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RX packets:3233473 errors:0 dropped:0 overruns:0 frame:0
TX packets:1766459 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
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Interrupt:20 Memory:fdfc0000-fdfe0000
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Interrupt:20 Memory:fdfc0000-fdfe0000
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Interrupt:20 Memory:fdfc0000-fdfe0000
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Interrupt:20 Memory:fdfc0000-fdfe0000
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LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 25-MAY-2012 15:12:35
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
Alias LISTENER_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 25-MAY-2012 14:28:11
Uptime 0 days 0 hr. 44 min. 23 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
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Listener Log File /home/oracle/app/oracle/diag/tnslsnr/racnode1/listener_scan1/alert/log.xml
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(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.20.0.214)(PORT=1521)))
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Instance "racdb2", status READY, has 1 handler(s) for this service...
Service "racdbXDB.development.info" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Instance "racdb2", status READY, has 1 handler(s) for this service...
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How does SCAN work?
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remote_dependencies_mode     string     TIMESTAMP
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remote_login_passwordfile     string     EXCLUSIVE
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remote_os_roles           boolean     FALSE
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Try it:
http://levipereira.wordpress.com/2011/05/03/configuring-client-to-use-scan-11-2-0/
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$ olsnodes -i -s -n
racnode1     1     racnode1-vip     Active
racnode2     2     racnode2-vip     Active
srvctl config vip -n racnode1
VIP exists.:racnode1
VIP exists.: /racnode1-vip/172.20.0.212/255.255.255.0/eth0
srvctl config vip -n racnode2
VIP exists.:racnode2
VIP exists.: /racnode2-vip/172.20.0.211/255.255.255.0/eth0
srvctl config scan
SCAN name: rac-scan.xxx.local, Network: 1/172.20.0.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /172.20.0.214/172.20.0.214
SCAN VIP name: scan2, IP: /rac-scan.xxx.local/172.20.0.210
SCAN VIP name: scan3, IP: /172.20.0.213/172.20.0.213
SQL> select INST_ID, NAME, VALUE
2 from gv$parameter
3 where name like '%_listener%';
INST_ID
NAME
VALUE
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local_listener
(address=(protocol=tcp)(port=1521)(host=racnode1-vip.xxx.local))
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remote_listener
rac-scan:1521
INST_ID
NAME
VALUE
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local_listener
(address=(protocol=tcp)(port=1521)(host=racnode1-vip.xxx.local))
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remote_listener
INST_ID
NAME
VALUE
rac-scan:1521
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LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 28-MAY-2012 13:36:10
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
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Instance "racdb1", status READY, has 1 handler(s) for this service...
Handler(s):
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Instance "racdb2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
REMOTE SERVER
(address=(protocol=tcp)(port=1521)(host=racnode2-vip.xxx.local))
Service "racdbXDB.development.info" has 2 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: racnode1.xxx.local, pid: 3651>
(ADDRESS=(PROTOCOL=tcp)(HOST=racnode1.xxx.local)(PORT=62553))
Instance "racdb2", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: racnode2.xxx.local, pid: 6501>
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The command completed successfully
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LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 28-MAY-2012 13:38:02
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Handler(s):
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LOCAL SERVER
Service "racdb.development.info" has 1 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "racdbXDB.development.info" has 1 instance(s).
Instance "racdb1", status READY, has 1 handler(s) for this service...
Handler(s):
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DISPATCHER <machine: racnode1.xxx.local, pid: 3651>
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Copyright (c) 1991, 2009, Oracle. All rights reserved.
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Instance "racdb2", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER <machine: racnode2.xxx.local, pid: 6501>
(ADDRESS=(PROTOCOL=tcp)(HOST=racnode2.xxx.local)(PORT=10619))
The command completed successfully
UPDATE:
$ srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521
There is a period of time when I shutdown one node where I cannot connect and get "ORA-12514: TNS:listener does not currently know of service requested in connect descriptor"
Edited by: MartinJEvans on May 28, 2012 2:02 PM

Connecting to Oracle lite via VB6

Hello
is there a better way to connect to Oracle 10g when using VB6?
this is what I have:
Under references I am using Microsoft DAO 3.6 Object library
I do have a module where I defined the following public variables:
Public wsOracle As DAO.Workspace
Public cnOracle As DAO.Connection
Public strConn As String
and a function to alllow me to connect to the database:
Function ConnectDB()
On Error GoTo Error_DataBaseError
strConn = "ODBC;DSN=MY_DATABASE;UID=user;PWD=passr"
Set wsOracle = DBEngine.CreateWorkspace("", "admin", "admin", dbUseODBC)
wsOracle.DefaultCursorDriver = dbUseClientBatchCursor
Set cnOracle = wsOracle.OpenConnection("", dbDriverNoPrompt, False, strConn)
Error_DataBaseError:
If Err <> 0 Then
Call ErrorCatching("ConnectDB ()")
End If
End Function
It seems to work but I am having issues, two apps are connected to the same Database one is in power builder y the other in VB6 after a certain time of inactivity I get timed out from the VB app and this gets also into the power builder app.
but if one app is open for a long time it seems to work just fine. any ideas why?
I read that I can use the Oracle Lite 40 ODBC Driver
but I can't seem to find a way to do the call from VB6
any ideas?
any enlightenment will be appreciated

Unfortunately, in 2.0 beta, the Infobus Data Form wizard
connection editor only supported the Oracle Thin, OCI7 and OCI8
drivers. For 2.0 production, Oracle Lite and the JDBC-ODBC bridge
will also be supported.
Regards,
JDeveloper Team
Poorna Byri (guest) wrote:
: Hi,
: Can we can connect to Oracle Lite 3.5 from Oracle JDeveloper2.0
: Beta using Infobus Data Form. When I tried to create a file
based
: on "Infobus Based Data Form" wizard it is not displaying Oracle
: Lite 3.5 driver. Can I create a TNS name for Oracle Lite 3.5
: database.
: Any help.
: Thanks.
: Poorna Byri
null

Tnsping doesnt work. cant connect to oracle on linux from windows client

Installed Oracle 11g on Linux VM. Tried connecting from Tora/SqlDeveloper from Windows machine, but fails. TNSPING fails. PING works fine. Any idea how to resolve below issue?
Below is the info and checks made :
[oracle@oraclelinux6 admin]$ more *.ora
listener.ora
# listener.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /apps/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = orcl)
LISTENERLX =
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
ADR_BASE_LISTENER = /apps/app/oracle
sqlnet.ora
# sqlnet.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
ADR_BASE = /apps/app/oracle
SQLNET.EXPIRE_TIME=10
SQLNET.INBOUND_CONNECT_TIMEOUT=240
tnsnames.ora
# tnsnames.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ ifconfig
eth1      Link encap:Ethernet HWaddr 08:00:27:CA:B7:5D
          inet addr:192.168.1.121 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feca:b75d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:243465 errors:0 dropped:0 overruns:0 frame:0
          TX packets:143708 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:347575845 (331.4 MiB) TX bytes:9778008 (9.3 MiB)
lo        Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:36859 errors:0 dropped:0 overruns:0 frame:0
          TX packets:36859 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2400424 (2.2 MiB) TX bytes:2400424 (2.2 MiB)
virbr0    Link encap:Ethernet HWaddr 52:54:00:8D:63:05
          inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[oracle@oraclelinux6 admin]$ hostname
oraclelinux6.localdomain
[oracle@oraclelinux6 admin]$ more /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.2.15       oraclelinux6.localdomain
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ sqlplus system@orcl
SQL*Plus: Release 11.2.0.1.0 Production on Mon Dec 2 08:19:59 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Enter password:
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
Enter user-name: system
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> set head off
SQL> select * from v$instance;
              1 orcl
oraclelinux6.localdomain
11.2.0.1.0        01-DEC-13 OPEN         NO           1 STOPPED
ALLOWED    NO ACTIVE            PRIMARY_INSTANCE   NORMAL    NO
SQL> select * from v$database;
1360274593 ORCL      26-NOV-13            945184 26-NOV-13
                      1 15-AUG-09 NOARCHIVELOG            1071075
        1033565 CURRENT 26-NOV-13                  1283             1094699
02-DEC-13 NOT ALLOWED 26-NOV-13 READ WRITE           MAXIMUM PERFORMANCE
UNPROTECTED          ENABLED   1360252065 1360252065 PRIMARY
            945184 DISABLED NOT ALLOWED          DISABLED NONE    NO       NO
NO NO           13
Linux x86 64-bit
                           2                      2     1094771
NO                 NO NO orcl
                         0 DISABLED
                    0
NO                                 NO
LSNRCTL> show inbound_connect_timeout
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
LSNRCTL>
[oracle@oraclelinux6 admin]$ tnsping orcl
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:11:34
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
/apps/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = orcl)))
OK (0 msec)
<msg time='2013-12-02T08:11:55.728-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
<msg time='2013-12-02T08:13:23.444-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:13:23 * (CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=sqlplus)(HOST=oraclelinux6.localdomain)(USER=oracle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=60806)) * establish * orcl * 12514
</txt>
</msg>
<msg time='2013-12-02T08:13:23.444-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
<msg time='2013-12-02T08:19:54.141-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:19:54 * service_update * orcl * 0
</txt>
</msg>
<msg time='2013-12-02T08:20:00.146-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:20:00 * service_update * orcl * 0
</txt>
</msg>
<msg time='2013-12-02T08:20:03.639-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:20:03 * (CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=sqlplus)(HOST=oraclelinux6.localdomain)(USER=oracle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=60970)) * establish * orcl * 12514
</txt>
</msg>
<msg time='2013-12-02T08:20:03.639-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
[oracle@oraclelinux6 admin]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:25:38
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ lsnrctl status LISTENERLX
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:29:23
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENERLX
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                02-DEC-2013 07:55:29
Uptime                    0 days 0 hr. 33 min. 54 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /apps/app/oracle/product/11.2.0/dbhome_1/log/diag/tnslsnr/oraclelinux6/listenerlx/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "orcl.localdomain" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB.localdomain" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@oraclelinux6 admin]$
CLIENT SIDE :
C:\Windows\system32>ping 192.168.1.121
Pinging 192.168.1.121 with 32 bytes of data:
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Ping statistics for 192.168.1.121:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\Windows\system32>tnsping ORACLELINUX6
TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 03-DEC-2013 01:30:13
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
D:\app\Laasya\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.121)(PORT = 1521)) (C
ONNECT_DATA = (SERVICE_NAME = orcl)))
TNS-12535: TNS:operation timed out
# tnsnames.ora Network Configuration File: D:\app\Laasya\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = Laasya-PC)(PORT = 1522))
ORCL =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = Laasya-PC)(PORT = 1522))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
ORACLELINUX6 =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.121)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)

f0c7e0f7-dab5-4b63-a36c-04b7e8eb552d wrote:
Installed Oracle 11g on Linux VM. Tried connecting from Tora/SqlDeveloper from Windows machine, but fails. TNSPING fails. PING works fine. Any idea how to resolve below issue?
Below is the info and checks made :
[oracle@oraclelinux6 admin]$ more *.ora
listener.ora
# listener.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /apps/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = orcl)
LISTENERLX =
It is pointless, and just adds to the confusion, to name your listener anything other than the default name of LISTENER
(DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
Client requests to 'localhost' (or its ip address of 127.0.0.1) never leave the client machine. Hence, any listener configured for that address will never receive a request from any other machine.
ADR_BASE_LISTENER = /apps/app/oracle
sqlnet.ora
# sqlnet.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
ADR_BASE = /apps/app/oracle
SQLNET.EXPIRE_TIME=10
SQLNET.INBOUND_CONNECT_TIMEOUT=240
tnsnames.ora
# tnsnames.ora Network Configuration File: /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
See comment above regarding 'localhost'.
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ ifconfig
eth1      Link encap:Ethernet HWaddr 08:00:27:CA:B7:5D
          inet addr:192.168.1.121 Bcast:192.168.1.255 Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feca:b75d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:243465 errors:0 dropped:0 overruns:0 frame:0
          TX packets:143708 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:347575845 (331.4 MiB) TX bytes:9778008 (9.3 MiB)
lo        Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING MTU:16436 Metric:1
          RX packets:36859 errors:0 dropped:0 overruns:0 frame:0
          TX packets:36859 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2400424 (2.2 MiB) TX bytes:2400424 (2.2 MiB)
virbr0    Link encap:Ethernet HWaddr 52:54:00:8D:63:05
          inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[oracle@oraclelinux6 admin]$ hostname
oraclelinux6.localdomain
[oracle@oraclelinux6 admin]$ more /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.0.2.15       oraclelinux6.localdomain
where did that 10.0.2.15 address come from? You don't have any network adapters configured for that address
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ sqlplus system@orcl
SQL*Plus: Release 11.2.0.1.0 Production on Mon Dec 2 08:19:59 2013
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Enter password:
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
A well-documented error.
see: http://edstevensdba.wordpress.com/2011/03/19/ora-12514/ (ora-12514 Listener does not know of requested service )
Enter user-name: system
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Since you did not use a tns service name ('@orcl') this was a bequeth connection to a local database.
SQL> set head off
SQL> select * from v$instance;
              1 orcl
oraclelinux6.localdomain
11.2.0.1.0        01-DEC-13 OPEN         NO           1 STOPPED
ALLOWED    NO ACTIVE            PRIMARY_INSTANCE   NORMAL    NO
SQL> select * from v$database;
1360274593 ORCL      26-NOV-13            945184 26-NOV-13
                      1 15-AUG-09 NOARCHIVELOG            1071075
        1033565 CURRENT 26-NOV-13                  1283             1094699
02-DEC-13 NOT ALLOWED 26-NOV-13 READ WRITE           MAXIMUM PERFORMANCE
UNPROTECTED          ENABLED   1360252065 1360252065 PRIMARY
            945184 DISABLED NOT ALLOWED          DISABLED NONE    NO       NO
NO NO           13
Linux x86 64-bit
                           2                      2     1094771
NO                 NO NO orcl
                         0 DISABLED
                    0
NO                                 NO
LSNRCTL> show inbound_connect_timeout
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
LSNRCTL>
[oracle@oraclelinux6 admin]$ tnsping orcl
TNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:11:34
Copyright (c) 1997, 2009, Oracle. All rights reserved.
Used parameter files:
/apps/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = orcl)))
OK (0 msec)
<msg time='2013-12-02T08:11:55.728-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
<msg time='2013-12-02T08:13:23.444-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:13:23 * (CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=sqlplus)(HOST=oraclelinux6.localdomain)(USER=oracle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=60806)) * establish * orcl * 12514
</txt>
</msg>
<msg time='2013-12-02T08:13:23.444-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
<msg time='2013-12-02T08:19:54.141-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:19:54 * service_update * orcl * 0
</txt>
</msg>
<msg time='2013-12-02T08:20:00.146-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:20:00 * service_update * orcl * 0
</txt>
</msg>
<msg time='2013-12-02T08:20:03.639-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>02-DEC-2013 08:20:03 * (CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=sqlplus)(HOST=oraclelinux6.localdomain)(USER=oracle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=60970)) * establish * orcl * 12514
</txt>
</msg>
<msg time='2013-12-02T08:20:03.639-08:00' org_id='oracle' comp_id='tnslsnr'
type='UNKNOWN' level='16' host_id='oraclelinux6.localdomain'
host_addr='10.0.2.15'>
<txt>TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
</txt>
</msg>
[oracle@oraclelinux6 admin]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:25:38
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12535: TNS:operation timed out
TNS-12560: TNS:protocol adapter error
TNS-00505: Operation timed out
[oracle@oraclelinux6 admin]$
[oracle@oraclelinux6 admin]$ lsnrctl status LISTENERLX
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 02-DEC-2013 08:29:23
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENERLX
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                02-DEC-2013 07:55:29
Uptime                    0 days 0 hr. 33 min. 54 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /apps/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /apps/app/oracle/product/11.2.0/dbhome_1/log/diag/tnslsnr/oraclelinux6/listenerlx/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
See previous comments regarding localhost and 127.0.0.1
Services Summary...
Service "orcl.localdomain" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB.localdomain" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@oraclelinux6 admin]$
CLIENT SIDE :
C:\Windows\system32>ping 192.168.1.121
Pinging 192.168.1.121 with 32 bytes of data:
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Reply from 192.168.1.121: bytes=32 time<1ms TTL=64
Ping statistics for 192.168.1.121:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\Windows\system32>tnsping ORACLELINUX6
TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 03-DEC-2013 01:30:13
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
D:\app\Laasya\product\11.2.0\dbhome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.121)(PORT = 1521)) (C
ONNECT_DATA = (SERVICE_NAME = orcl)))
TNS-12535: TNS:operation timed out
# tnsnames.ora Network Configuration File: D:\app\Laasya\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
    (CONNECT_DATA =
      (SID = CLRExtProc)
      (PRESENTATION = RO)
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = Laasya-PC)(PORT = 1522))
ORCL =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = Laasya-PC)(PORT = 1522))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
ORACLELINUX6 =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.121)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = orcl)
You've thrown out a huge amount of detailed data, but showing a variety of errors, and combinations. Overall, I get the impression you are confusing remote vs. local connections. Please read the following, then come back and let's focus on one error at a time.
see: http://edstevensdba.wordpress.com/2011/02/09/sqlnet_overview/ (Help! I can’t connect to my database )
see: http://edstevensdba.wordpress.com/2011/02/16/sqlnet_client_cfg/ ( Help! I can’t connect to my database (part duex) )

Need to test db connectivity from Oracle 8.1.6 NT client

Our applications run on Windows NT servers and connect to the Oracle db server through an Oracle 8.1.6 NT Client. The Oracle db server is running Oracle 8.1.6.2 on HPUX 11.0. I am using commands in a batch file to restart the application services on the NT server when the database is brought down. Before starting the services back up I need to be able to make sure that the database is up. I was using the tnsping command to do this, but I found out that tnsping gives an 'OK' response when the listener is running and the database is down. I need something that works like tnsping, but tests for connectivity to the database, not just the listener.
I appreciate any help anyone can give me.
The following is the code from the batch file:
REM ******************************************************
REM Stop the TM Proc Mon Service
net stop TMProcMonSrvc
REM ******************************************************
:CHECKDB
REM Check the connectivity to the database
tnsping tm52ut
REM Check to see if the tnsping was successful (=0)
IF %ERRORLEVEL%==0 GOTO STARTTM
GOTO CHECKDB
REM ******************************************************
:STARTTM
REM Start the TM Proc Mon Service
net start TMProcMonSrvc
REM ******************************************************
:EXIT
exit

Use sqlplus. Use a bogus username/password (if and watch out for the Invalid username error. If you get an invalid username/password error then the db is up else it is down. Suggestion: It would be much easier to write a wsh script that uses ADO to connect to the db. Batch files do not give you much control over the shell.

Connect ready nas duo via TL-WA701ND client

Hope someone can help?
I have a Netgear Readynas Duo that I wish to connect to my wireless home broadband. When the Readynas is connected by Ethernet cable to my BT home hub 3 it works. Due to the hub being in a bedroom and the noise of the Readynas it needs to be moved. I hope to connect the Readynas to my home broadband by using a TP link WA701ND ver 1 set to client mode.
I have followed previous posts to set static Ip addresses to configure my WA701ND but get lost in trying to ensure that the Version, encryption, psk password and IP addresses all match the hub.
I would really appreciate some simple step by step guidance to enable me to make what seems to be a simple connection.
Alan

I did not cover the client mode on my website, but if you follow the instructions for the Universal Repeater mode using my default config file, that works as an client as well.
You can then go into the setup, and change the config to client, unless you want to use it as a wireless repeater as well.
TP-Link WA701ND
If you find that wireless access is too slow, then Powerline adapters may be a better option.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Connect to Oracle DB using DBCP and tnsnames.ora

I have a Spring-based web app that is running on Tomcat and uses DBCP to connect to Oracle.
The problem:
Need to pull database connection information from tnsnames.ora file. There is Oracle Client installed on a server, so tnsnames file is available.
According to JDBC documentation, the following url should do the trick: jdbc:datadirect:oracle:TNSNamesFile=c:\\oracle\\product\\10.2.0\\NETWORK\\ADMIN\\tnsnames.ora;TNSServerName=FITZGERALD.SALES
This leads to the following declaration in dataAccessContext-local.xml file:
+<bean id="dataSource" class="org.apache.tomcat.dbcp.dbcp.BasicDataSource" destroy-method="close">+
+<property name="driverClassName" value="oracle.jdbc.OracleDriver"/>+
+<property name="url" value="jdbc:datadirect:oracle:TNSNamesFile=C:\\oracle\\product\\10.2.0\\db_1\\network\\admin\\tnsnames.ora;TNSServerName=TESTDB"/>+
+<property name="username" value="${jdbc.username}"/>+
+<property name="password" value="${jdbc.password}"/>+
+</bean>+
This doesn’t work for me saying that database url is invalid.
Can anyone provide instructions on how to set up DBCP with tnsnames.ora?
Any help greatly appreciated.

You are right, the I got that url may not be correct. I got it from datadirect documentation.
I couldn�t find any good information or examples on this, but I think using TNS keyword-value pairs and tnsnames.ora is supported by type4 Oracle 10g JDBC.
Some info I found in section �Connecting to the Database through the Applet� in JDBC Reference http://download.oracle.com/docs/cd/B19306_01/java.102/b14355/jdbcthin.htm#CACCHECD
I guess there is something off in that documentation though. I couldn't get it working.

Oracle 10g XE: ORA 12514: TNS ...

Hello,
I installed "Oracle 10g XE Database" in a Windows 2003 Server platform.
Sometimes, when I restart the machine, database gives me the following error:
ORA 12514:TNS:IL LISTENER NON è ATTUALMENTE A CONOSCENZA DEL SERVIZIO RICHIESTO NEL DESCRITTORE DI CONNESSIONE.
DESCRIPTION: AN UNHANDLED EXCEPTION OCCURRED DURING THE EXECUTION OF THE CURRENT WEB REQUEST. PLEASE REVIEW THE STOCK TRACE FOR MORE INFO ABOUT THE ERROR AND WHERE IT
ORIGINATED IN THE CODE.
EXCEPTION DETAILS: ORACLE DATA ACCESS.CLINT.ORACLE EXCEPTION: ORA 12514:TNS: IL LISTENER NON è ATTUALMENTE A CONOSCENZA DEL SERVIZIO RICHIESTO NEL DESCRITTORE DI CONNESSIONE.
I can solve it restarting "OracleServiceXE" and "OracleXETNSListener".
My colleagues cannot resolve this problem and they had to install Oracle 9i.
It is all ok with Microsoft XP Professional.
Is there any patch available to solve this problem with Microsoft Windows Server 2003?
Thank you very much.
Massimiliano

it seems not to be a bug but a configuration issue.
12514, 00000, "TNS:listener does not currently know of service requested in connect descriptor"
// *Cause: The listener received a request to establish a connection to a
// database or other service. The connect descriptor received by the listener
// specified a service name for a service (usually a database service)
// that either has not yet dynamically registered with the listener or has
// not been statically configured for the listener. This may be a temporary
// condition such as after the listener has started, but before the database
// instance has registered with the listener.
// *Action:
// - Wait a moment and try to connect a second time.
// - Check which services are currently known by the listener by executing:
// lsnrctl services <listener name>
// - Check that the SERVICE_NAME parameter in the connect descriptor of the
// net service name used specifies a service known by the listener.
// - If an easy connect naming connect identifier was used, check that
// the service name specified is a service known by the listener.
// - Check for an event in the listener.log file.

10g XE, ORA-12514 TNS Listener does not currently know of service req...

Hi,
I have an Oracle XE installan. After booting and trying to connect to the Oracle 10g XE database, then on and off I encounter ORA-12514 error. Did someone experience a similar issue? As far as I know
Regards,
Tamas

Hi Tamas Szecsy!
I encountered a bug that looks similar to yours using Fedora 10 and Oracle XE. The problem has been that the DB hadn't registered its self by listener. After a "lsnrctl status" I saw that the listener didn't know the service XE. I did an "ALTER SYSTEM REGISTER" in SQL*Plus and the problem was solved for this time. I had to do the register each time I did a shutdown and startup.
Hope that helps!
yours sincerely

ASP SCRIPT CANT CONNECT TO ORACLE 9i via Oracle9i Client

Please help...i get an ORA-12154 when attempting to link access and oracle. what are some ways to correct this issue. i have researched as much as i understand..
error that occurrs is as follows:
[Microsoft][ODBC driver for Oracle][Oracle]ORA-12154: TNS:could not resolve service name(#12154...........
I HAVE installed and CONFIGURED ORACLE 9i ODBC DRIVER.
ODBC to Oracle works mit Excel or Access.
TNS works good with Developer 6i and SQL Plus.
Only my ASP VBSCRIPT on my IIS5 cant connect.
please can anyone help me !

Microsoft OLE DB Provider for ODBC Drivers- Fehler '80004005'
Aufgrund des Systemfehlers 5 (Oracle in Oracle9i_Client) konnte der angegebene Treiber nicht geladen werden.
/apps/connection/uxprod.asp, line 4
hat folgenden Inhalt:
<%
' ************* DB-Connection ***************
Set conn = Server.CreateObject("ADODB.Connection")
conn.Open "DSN=UXPROD;UID=anwlist;Password=xxxx;"
%>
ODBC Driver with Excel works well; anly with ASP via
OLE DB ist doesnt work !

Connection to Oracle XE via IIS/ASP app was working then stopped

I am prototyping an application for my new management here so that I can recommend they use Oracle XE.
The connection to the Oracle XE database appears to have stopped working, via an IIS/ASP application I wrote. I can still connect through ODBC using native MS Access to Oracle XE, when logged into XP, its just when I try to log in using the app via IIS I get the following error:
Unable to establish connection to database.
Error information:
Microsoft OLE DB Provider for ODBC Drivers (0x80040E4D)
[Oracle][ODBC][Ora]ORA-12154: TNS:could not resolve the connect identifier specified
It was working for a while, like the whole first week. It might be related to the fact that that I finally rebooted, not sure.
I have tried many, many things. I made the IUSR account an admin on the box hoping that maybe it had just lost access to the local ODBC/TNSNAMES. Right now all the components are local to my development box, from the IIS server to the Oracle eXtended Edition database (XE, free). Like I said, it was working. I did have this same message I believe early on, which turned out due to the fact that my ODBC DSN was a local DSN, instead of a System DSN, which I overcame at that time. But it just started happening again, possibly after a reboot.
I also tried switching to a local MS Access database, and I got a similar message. I moved the Access db to c: root, and it appears to work, so it appears to be a file/directory access issue.
But I'm not sure how to resolve it because I would much prefer to use the Oracle database.
Thoughts?

As far as the connect string goes, I'm not sure exactly what to specify to you.
I am using the default connect string that comes when you install XE.
I.e., "XE".
I suspect this might be a path issue for the virtual account that is used by IIS sessions. As you may know, when IIS runs, it logs the web user into the box using a dummy account, typically prefixed with the string "IUSR".
Although I made this account an admin to the box, I think I may need to add some of the Oracle Client directories to the path which is accessed by this IUSR account. The problem is, the acount, with its password, was set up by default and I don't know what its password is. But I think that I could try to adde Oracle's home path to the default system path, what do you think?
In other words, I don't think the XE connection libraries are available to this dummy IIS account. The strange thing is, it worked for a while, ostensibly till I rebooted.
Know also that I am not using the Oracle Client per se, although I did install it and try it with mixed results. I am just using the Oracle OLE DB ODBC that appeared when I installed the Oracle XE server itself.

Connecting to Oracle XE via regular 10g client - ORA-12514

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