Server Administration :: Oracle Hang - Client Cannot Connect Database
Apr 29, 2012
all of the client cann't connect the db,and using sqlplus / as sysdba also cann't login there are many error of TNS-12535 and in the listener.log
alert.log:
Sun Apr 29 18:10:36 2012
opidcl aborting process unknown ospid (42992060) as a result of ORA-604
Sun Apr 29 18:10:54 2012
opidcl aborting process unknown ospid (26280196) as a result of ORA-604
I'm trying to connect a oracle client application on the client machine to a remote oracle server on the server machine but i get a connection fail.
On the server machine I configured oracle server in the following way:
Installed oracle server. Created a database "DB_Test" with the database configuration assistant Created a LISTNER with the Oracle NET Manager with the following parameter:
Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521 Created "dbtest" service with the Oracle NET Manager with with the following parameter: Service Name: "dbtest" Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521
All services on the server machine are running and I opened port number (1521) in the router. On the client machine I installed SQL PLUS and SQL Developer.
With SQL Plus as by the official documentation I have entered the following command:
CONNECT username/password@[//]host[:port][/service_name]. In my case is: CONNECT SYSTEM/oracledb@//ENZOVAIO:1521/testdb.
With SQL Developer I have entered the same parameter.
But with both SQLPlus and SQL Developer the connection fails.
I have new virtual UNIX machine and I installed oracle client on /usr/lib/oracle. Also I have a oracle database and I am able to connect to this database from my desktop sql developer.
So now I am trying to connect from new UNIX machine. Where I created tnsnames.ora file under /usr/lib/oracle/network/admin and before connecting did export the following
ORA-12545: Connect failed because target host or object does not exist. Not sure what I missed here. using same tns file I am able to connect from sql developer on windows.
I am trying to find the unix process for one of my application in the database but I am unable to view the same. To simulate, I did the following.
1. My database runs on different server. 2. I invoked "sqlplus" from another unix box to login to the database. 3. I found that the process id (ps -ef |grep sqlplus). 4. When I execute the below mentioned query it does not display the process id that I am looking for. But the osuser, username, program and machine details are correct. How can I know the process details from the database?
SELECT SYS.GV_$SESSION.OSUSER, SYS.GV_$SESSION.USERNAME, SYS.GV_$PROCESS.SPID, SYS.GV_$SESSION.MACHINE, SYS.GV_$SESSION.PROGRAM, SYS.GV_$PROCESS.PROGRAM ,SYS.GV_$SESSION.SQL_ID FROM SYS.GV_$PROCESS, SYS.GV_$SESSION WHERE SYS.GV_$PROCESS.ADDR=SYS.GV_$SESSION.PADDR and SYS.GV_$SESSION.USERNAME='TEST' and SYS.GV_$SESSION.MACHINE like '%hostname%'
I recompile a package in a session,and found the session is hang, I know there are have others session run the package,how can i find what session run by the package?
I have installed a database in D drive. I want to create another database in the same machine. I tried installing the new database using DBCA. Installation was ok. I added entry in TNS file.
When i try to login to this new database from other machine, i am unable to connect to this database. I made an entry in TNS on my local machine. It says the user id /password is wrong, even though they r correct. I am using the same password to delete the database.
I migrated one database ( DB1) from old database server to new database server where user accounts were locked before migrating the database.But migration was successful and database and accounts got created in new database server.
In old database server , user accounts status is locked and in new database server user accounts are open but still i am unable to connect to database using new user in new database server.
why im unable to connect to database whose accounts are open?
last two years i am using oracle 9i in windows 2003 server but now i installed oracle 10g on another server (PC) , i want to connect 9i to 10g with same database and user .
i create new database (Student) using command line, now i want to connect with newly created database (using sys as sysdba), but again it directly connected with old database (ORCL). So what should i do to connect with newly created database (Student).
In one machine I have windows xp with Oracle 11.2.0.2 database installed and I am able to connect to the database using both sql developer and sql plus.
In another machine I have windows 7. I installed Oracle client 11.2.0.1, then using Net configuration tool, I installed both listener.ora and tnsnames.ora files.
Now, I want to connect to the database which is installed on windows xp from windows 7 using the oracle client. When I tried to connect, I got the following error :
ERROR:ORA-12560: TNS:protocol adapter error
In order to rectify the above error, I was making sure that ORACLE_HOME AND ORACLE_SID were properly set in the regedit file (under HKEY_LOCAL_MACHINE > SOFTWARE > ORACLE). The ORACLE_HOME was set properly. But I found ORACLE_SID missing. So I added ORACLE_SID environment variable in the registry and re-tried connecting to the database. But I am not able to connect. What else should I do in order to connect?
We are unable to connect to Oracle 11.1.0.7.0 from Oracle Forms 4.5..However we are able to connect using Oracle forms 6i
Now Forms 4.5 is old and not supported, however apart from Tests I will need prove it to the higher ups...Do we have any link, document which will cover such compatibility issue?
The problem is that this connection errors when I try to connect using my SQuirreL client. My developers want to connecting using the SID or the SERVICE_NAME and by using the "New Method" syntax, not the "Old Method" syntax. According to the documentation the "New Method" syntax works with the SERVICE_NAME or the SID. The "Old Method" only works with the SID.
# Host name is vmwwin7634.na.SAS.com # SID is sting2 # SERVICE_NAME is sting2.na.sas.com
PROBLEM using SID errors ==> jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2 THIS WORKS using SERVICE_NAME ==> jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2.na.sas.com
I am using SQuirreL Client version 3.4.0
# Here is the tnsnames.ora entry on the server. STING2 = (DESCRIPTION =
[code]...
# In this documentation it says, "On new syntax SERVICE may be a oracle service name or a SID."You can find this on the orafax wiki under JDBC#Thin_driver.
# I was able to connect with the "old method" using the SID only, SERVICE_NAME errors jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521:sting2.na.sas.com (SQuirreL client error, "Unexpected Error occurred attempting to open an SQL connection.") jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521:sting2 (this works)
# "New Method" jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2.na.sas.com (this works) jdbc:oracle:thin:@vmwwin7634.na.SAS.com:1521/sting2 (this errors) (SQuirreL client error, "Unexpected Error occurred attempting to open an SQL connection.")
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Apr 12 11:07:15 2013
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR: ORA-12518: TNS:listener could not hand off client connection
Below is alertlog entry
Completed: alter database open Thu Apr 04 17:06:19 2013 db_recovery_file_dest_size of 4096 MB is 0.00% used. This is a user-specified limit on the amount of space that will be used by this
I am trying to install Oracle client 11G software in AIX box. In /home/oracle, I find 7 profile files. I am not sure which profile file I am supposed to consider.
Acer laptop, Intel Processor w/ Windows 7 Professional (64-bit) Delphi 2010 Professional Oracle XE (+ the Oracle XE client that comes with it)
I cannot can't to the Oracle database from Delphi. The error I keep getting is:
Alias is not currently opened. [Oracle][ODBC][Ora]ORA-12154:TNS: could not resolve the connet identifier specified.
Here's what I've done:
1. Create an ODBC connection to my Oracle database
- run C:WindowsSysWOW64odbcad32.exe to open the ODBC administrator. - Data source name: bt_user - TNS Server Name: localhost/xe - user bt_user - Clicked "test connection" -- Success.
2. Open Delphi and drop a TDatabase component on my main form.
- Set the Alias Name property to "bt_user" (the alias I set up in ODBC) - Set database name to "bt_user". - Checked "connected".
Alternatively, I tried using the Delphi ADO components (the dbGo components).
- Drop TADOConnection component on my form. - Select "connection string" and open the dialog. - Click "build string". - Select "Microsoft OLE DB Provider for ODBC Drivers" from the selection. - In "use data source", select "bt_user" from the drop-down list (my ODBC connection from #1) - Click "test connection".
Again the same error.
My questions are:
1. Can Delphi work with Oracle XE (Express Edition)?
2. If so, then do I need to install the "Instant Client"?
3. Will the instant client for Oracle 10g work with Oracle 10g XE?
4. Do I need to install any additional ODBC driver(s)?
5. Why was I successful in creating the ODBC connection in Windows, but it failed in Delphi?
6. Will Visual Studio.NET (C#) work with Oracle XE, and what are the steps for setting that up?
Currently I am doing one Oracle installation.But very much confused where to start from. Since I am installing oracle on my personaly Laptop,do I need to install Oracle database server and Oracle client both or only installing database server is sufficient.
What is the exact difference between oracle database server and client.Only knowledge I have is that client is used to access database server remotely.are Oracle database server and client installable to be downloaded separately?
there is a problem , related to toad. when i try to connect with my database through toad then it throws an error-"Can't initialize OCI. Error -1", how to sort out of this problem. and i am using toad 9.2.7.1 on widows server2008.