The Oracle Net Listener is a service listening for incoming database connection request.

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Linking Oracle 10g XE with SQL server using ODBC

I am connecting Oracle 10 XE with an SQL server 2008 using ODBC in windows 7. I have successfully done following steps: Configured ODBC and test it, runs ok! Configured listener in tnsnames.ora and ...
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How do the Oracle DB instance and the local listener communicate?

It seems this my other question needs some background: Basically, on Windows, how do the Oracle DB instance process and the listener process communicate? Do they use TCP? Is the configuration of this ...
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446 views

ORA-01034: ORACLE not available in oracle 11g

I installed oracle 11g on ubuntu 14.04 and i started lister and the message is as below. LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 10-OCT-2014 14:20:02 Copyright (c) 1991, 2011, Oracle. ...
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ORA-12541: TNS:no listener

I've been working this issue all day, reading posts here and other locations. I'm just not able to get past this error. I can connect just fine locally on my server (CentOS), but continue to get the ...
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ORA-12518: TNS:listener could not hand off client connection ORACLE XE 11.2 x64

Im starting to be very very frustrated by this Oracle. So, I have installed Oracle XE 11.2 64 bit and ODAC121012_x64. I can start listener, I can do tnsping xe, but when I try to connect as via ...
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Linux Error: 111: Connection refused LSNRCTL

I have a problem starting my listener ,I am using Centos6.5 and Oracle12cR1. Database is been installed successfully.. Now my issue is when i start my listener ,following error are shown . ...
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Oracle program “lsnrctl” is missing after the installation of 32bit Oracle client

I cleaned up my computer for all old Oracle stuff using Uninstall (OUI) and then later used regedit to delete all references to Oracle and then deleted all remains of Oracle directories. I have HP ...
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602 views

How does SQL*Plus connect to Oracle without a listener?

sqlplus can be used even if there is no listener in the system, or if it isn't running. How does SQL*Plus connect to Oracle without a listener? I can connect any user using SQL*plus even with no ...
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Enable Oracle network encryption

I have to enable network encryption on a specific instance. We have a single DB machine runnning one listener from /etc/listener.ora and several instances. TNS_ADMIN is set to /etc. Oracle 11.2g is ...
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654 views

listener can not start

My listener in Oracle 11g R2 can not start . When I want to give the status of that, the error in below is shown: Connecting to <ADDRESS=<PROTOCOL=tcp><HODT=><PORT=1521>> ...
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Listener Log Oracle 11g R2

I'm using Oracle 11gR2 in RHEL5. Now a days my application, during run time, is showing exception as below. Listener refused the connection with the following error: ORA-12519, TNS:no appropriate ...
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Cannot connect to database remotely (not even locally when using ip address)

I can login using this command: sqlplus test/test@127.0.0.1:1521/local But not this one: (where 192.168.0.240) is my IP sqlplus test/test@192.168.0.240:1521/local I am absolutely sure that my ip ...
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Unable to create a new listener in oracle 11g

In net manager i get an error message "A valid logfile is required" when i click on listener and choose '+' button. and then it keeps on giving me that error when i click on any other tab or button in ...
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492 views

extproc env variables oracle 11g

I have oracle 11g with extproc separately configured in listener.ora. Users report some environmental variables that should be exported are not set. From where does extproc gets it environment ...
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Oracle 11g R2 on CentOS 6.3, and Net Configuration Assistant

this is my first time to install Oracle 11g R2 on Linux. I made all instructions in Oracle documentation. But in the installation process, the Net Configuration Manager is failed. I continued the ...
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Oracle 11g listener fails with ORA-12514 and ORA-12505 errors

I run an instance of Oracle 11g locally on my development machine and can connect to the local instance directly via SqlPlus: c:\>sqlplus ace SQL*Plus: Release 11.2.0.2.0 Production on Mon Mar ...
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listener does not currently know of SID given in connect descriptor in oracle 10g and solaris 10 env

I have a oracle 10g database in solaris 10 system. The SID=OTRS, I can connect to oracle database from local server itself. But I can not able connect from another client. It is returning an error ...
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check listener status other than 1521

I have two listner: one is running on port 1521 another on 1531. lsnrctl stat show's status of services running on port 1521 only. How should i check whether the services running on port 1531 is ...
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User can't stop Oracle listener (TNS-01190)

I have Oracle 10g installed on RedHat Enterprise Linux 5. I have 2 users that use Oracle: uid=501(user1) gid=502(group1) groupes=500(oinstall),501(dba),502(group1) and uid=500(oracle) ...
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Oracle 10g Listener problem

In Oracle 10g I have a listener problem, Here is tnsnames.ora : MYTNS = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = testiold) (PORT = 1521) ...
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1answer
4k views

Oracle server connection reset by peer socket write error

Full disclosure, I'm not a database admin, but if anyone is able to help me, it would be you guys. Our Oracle 11g database server stopped working, I'm not aware of anything that could have caused it, ...
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Override default SERVICE_NAME in init.ora

I'd like to define several service names for my instance in such a way that users should not know the actual instance name. This is what I have done in my init.ora: db_domain='company.com' ...
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ORA-01034: ORACLE not available

I tried to start the listener and do a dbstart, but it looks like it is still saying "Oracle Not available". Maybe the dbstart didn't work. Any suggestions would help me. [user@fedora16 bin]$ echo ...
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Error ORA-12541: TNS:no listener

Whenever I try to start the listener (I just have only one Oracle database) I get the following: LSNRCTL> status Connecting to ...
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SQL Developer cannot connect to Oracle database, yet sqlplus can!

I am having a problem connecting sql developer to my Oracle 10g database. sqlplus is able to connect fine, but when I try to open the connection in sql developer, I get 'ORA-12514 TNS does not know ...
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How to configure an Oracle Listener without SID_LIST_LISTENER in listener.ora?

I have access to a ORACLE 11g server using the following listener.ora # listener.ora Network Configuration File: D:\app\Administrator\product\11.1.0\db_1\NETWORK\ADMIN\listener.ora # Generated by ...