I am trying to make connection to Oracle Database 18c XE with sqldeveloper,
but I am getting :
Status : Failure -Test failed: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
So I am trying to start my listener, which I have inside
/opt/oracle/product/18c/dbhomeXE/network/admin/samples
And I am getting lsnrctl: command not found
I am also getting the same message for sqlplus which is inside /opt/oracle/product/18c/dbhomeXE/bin
I know that you are going to say Oracle is not supported for Ubuntu,
but I am really only capable of using Ubuntu..
[CLOSED] I successfully was able to connect to oracle database via sqldeveloper 17.3 by following this link steps and guide:
http://meandmyubuntulinux.blogspot.com/2012/06/trouble-shooting-oracle-11g.html
You need to run following steps to access Oracle executables as documented in Installation Guide for Linux x86-64:
$ export ORACLE_SID=XE
$ export ORAENV_ASK=NO
$ . /opt/oracle/product/18c/dbhomeXE/bin/oraenv
ORACLE_HOME = [] ? /opt/oracle/product/18c/dbhomeXE
The Oracle base has been set to /opt/oracle
oraenv will set PATH to the right setting.
Related
Every time I try to run the following sqlldr command on a terminal only oracle 19c system:
sqlldr username/password#$HOSTNAME/$ORACLE_SID control=rules.ctl log=backup_error_logs.txt data=output.csv errors=1000000
I get the following error message:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Things I have tried:
Verified that the listener is operable and listener.ora file is properly formatted with lsnrctl.
Verified the connection and oracle environment variables are working as the following sqlplus command runs without problem:
sqlplus username/password#$HOSTNAME/$ORACLE_SID
Verified the tnsname.ora is running properly configured with the following tnsping command:
tnsping $ORACLE_SID
Cannot think of anything else to try or to check. Does anyone have any advice without resorting to the GUI tools?
Could be a problem of quotes in the variables, the behavior of both tools is different regarding quotes.
For the purpose of learning, I have installed Oracle 18c XE v18.4.0.0 and Oracle SQL Developer v21.4.2. I have no previous experience with Oracle database.
Command LSNRCTL stat seems to show correct results:
LSNRCTL stat output
I am trying to connect to XEPDB1 Plugin database by using sqlplus command:
sqlplus system/oracle#192.168.1.102:1521/XEPDB1
(192.168.1.102 is my local IP)
but everytime I tried so, service OracleOraDB18Home1TNSListener (and listener also) stops.
Then I start it again manually and try again to connect to XEPDB1 but the same thing happen again.
Respond to connection command after few minutes is: ERROR: ORA-12537: TNS:connection closed.
Files listener.ora and tnsnames.ora are not modified after fresh installation of Oracle 18c XE.
Much appreciate if anybody can help me.
I followed this steps to install Oracle 19.6.0 for Ubuntu 18.04:
https://medium.com/#TechExpertise/installing-oracle-sql-developer-on-ubuntu-16-04-lts-bfa4af959deb
Then for some reason I was not able to open sqlplus, so I followed this steps as solution:
https://gist.github.com/tcnksm/7316877
And now I want to log in sqlplus by typing sqlplus / as sysdba, but I am getting:
ERROR: ORA-12545: Connect failed because target host or object does
not exist
So I think I have to make the appropriate settings in listener.ora and tnsnames.ora,
but I am missing this files.
SQL Developer and SQL*Plus are client only tools that connect to a database that must be running somewhere: either on the same host or on another host.
If this database exists you should have its connect string to connect to it with SQL Developer or SQL*Plus
If this database does not exist, you must first create it: there are several ways to do this in addition to install Oracle Database (server - not client) and to create a database:
install Oracle XE 18c on Oracle Linux or Windows: installation will install database software and create a database at the same time (easier for non database specialist)
use a pre-installed VM such as: https://www.oracle.com/database/technologies/databaseappdev-vm.html.
Just installed Oracle 11g XE (Windows), but can't connect in SQL Developer or run any command in CLI.
When try to connect in CLI using SYS or SYSTEM with password defined during the install, get the following error:
ORA-12638: credential retrieval failed
When I tray to connect via SQL Developer (tried via SID and Service Name, hostname=localhost, port=1521, SID=xe), get this error:
Status : Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in
connect descriptor
Already tried change SQLNET.AUTHENTICATION_SERVICES = (NTS) to (NONE) in sqlnet.ora file. When I do this, get the following error when try to connect with the SYS or SYSTEM user and password:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Already tried every solution in Google results, like reinstall, stop and start services... Mostly ask for first connect in CLI to make some changes, but even this I can't accomplish.
Any suggestions on how connect to the database?
Found the solution:
I was installing in my company Windows user domain.
First uninstall any instance of Oracle XE 11g.
Switch to a local administrator Windows user and install Oracle XE 11g.
Sign off and back to company Windows user.
Edit the file C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN\sqlnet.ora (or equivalent to your installation path). Change SQLNET.AUTHENTICATION_SERVICES = (TNS) to SQLNET.AUTHENTICATION_SERVICES = (NONE).
This change will allow you connect to database from you company Windows user.
As seen here: Error ORA-12638 in Oracle Database 11g
Try the following: Open command window, cd to Oracle bin directory, enter sqlplus /nolog. If you get a prompt enter connect / as sysdba. If you get connected then you can try "startup".
- -
Did you try to start the Oracle RDBMS service via Services (services.msc)?
Do you use an spfile? Check the registry for ORA_SID_NAME_PFILE that is different from default location of $ORACLE_HOME/dbs. Also check the default location. Use only the default location or the registry entry removing either the registry entry or the file in the default location depending on which you want to use.
When I use the command:
sqlplus username#ip_address:1521
I get the error:
ORA-12154: TNS:could not resolve the connect identifier specified
When I set ORACLE_HOME to /cygdrive/c/oracle/product/10.2.0/client_1, I get a different error:
Error 6 initializing SQL*Plus
Message file sp1<lang>.msb not found
SP2-0750: You may need to set ORACLE_HOME to your Oracle software directory
I can telnet to the server's port 1521.
I also tried the Windows path for ORACLE_HOME but it gives me the same error, also in Cygwin when I change the $PATH = $ORACLE_HOME/bin no command is recognized.
I am able to connect to this database via a excel macro but not using cmd.exe or Cygwin .
If you don't want to use TNSNAMES.ORA to specify the connection parameters you need to provide them on the command line. This works with the widest variety of SQLPlus versions.
sqlplus OraUser/OraPassword#'(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=remoteServer)(PORT=1521)))(CONNECT_DATA=(SID=OraSid)))'
Note ' is for Unix and needs to be changed to " for Windows.