Database Is Not Connected To Application
Jan 4, 2013
We have 11.2.0.3 RAC on Oracle Virtual Box,OEL 5.8. Storage is ASM on EMC SAN.Even when the database is not connected to application and thus open but idle and none is working on it, and all other virtual machines are powered off, we are still getting a continuous i/o in SAN.Since I am new to RAC setup I need to know the few things...
1.Is it normal behaviour?
2.If yes, what is the reason of this i/o? Is it due to continuous ping on voting disk?..write in OCR? automatic backup of OCR?
Attached File(s)
SAN_I0_Issue.png ( 65.33K )
Number of downloads: 2
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Jul 11, 2012
I have a data base for the bank application development. So there might be more than one sessions of the application running on the data base as well as there might be more than one data base sessions being connected from the dbas.
There is refresh procedure to refresh the data base from the baseload scripts ,So for that first we need to disconnect the users (Kill the sessions) and then drop the users then recreate the users and populate the users with the base load data.
I have prepared the killing and dropping user script in the following manner, Most of the times it is working fine and killing the users but some times it is not able to kill the drop the users it is erroring out with the error that can not dorp the users as there are active sessions running ,
set termout on
set echo on
spool Kill_sessions_drop_users.log
DECLARE
v_alt_stmt VARCHAR2(1000) := 'ALTER SYSTEM DISCONNECT SESSION ''';
v_kill_stmt VARCHAR2(1000);
[code].......
--This will kill all the sessions except the current session
CURSOR cur_usr_dtls IS SELECT username FROM all_users WHERE username IN ('ACTIVITI','TP','TPCORR','TPTUX','TPVIEW');
v_dr_stmt VARCHAR2(1000);
BEGIN
EXECUTE IMMEDIATE 'ALTER SYSTEM ENABLE RESTRICTED SESSION';
DBMS_OUTPUT.PUT_LINE('The database has been put in the restricted mode');
FOR v_cur_ssn IN cur_session
[code]........
--Here we are making the processor to wait for 60 mins so that that the killing will happen at the OS label
DBMS_LOCK.SLEEP(60);
FOR v_cur_usr_dtls IN cur_usr_dtls LOOP
v_dr_stmt :='DROP USER '||v_cur_usr_dtls.username ||' CASCADE';
BEGIN
EXECUTE IMMEDIATE v_dr_stmt;
[code]........
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May 15, 2010
Through RMAN i have to connect to two databases having same name but the databases are at two different nodes.Can RMAN recognise the 2 databases.If yes how? I want to know the command.
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Jun 28, 2006
I am facing difficulty in connecting Oracle 10g client to Oracle 10g database. Both the machines are in windows xp with service pack-2. The following observations are made in server machine
1. The loopback test of the server is successful.
2. One net service name created in the server end.
3. Database connection is successful with above service name.
4. tnsping <server ip address> is successful
The tnsnames.ora file of the server is
# tnsnames.ora Network Configuration File: C:oracleproduct10.2.0db_1
etworkadmin nsnames.ora
# Generated by Oracle configuration tools.
CONTRACT =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 80.0.28.42)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = cam)
[code]........
the sqlnet.ora file of the server is
sqlnet.ora Network Configuration File: C:oracleproduct10.2.0db_1NETWORKADMINsqlnet.ora
# Generated by Oracle configuration tools.
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
SQLNET.INBOUND_CONNECT_TIMEOUT = 30
The listner.ora file of the server is
listener.ora Network Configuration File: C:oracleproduct10.2.0db_1NETWORKADMINlistener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 80.0.28.42)(PORT = 1521))
)
When I am connecting the 10g database with 10g client I am getting ORA-12170 error.
Attempting to connect using userid: nss
The test did not succeed.
ORA-12170: TNS:Connect timeout occurred
There may be an error in the fields entered,or the server may not be ready for a connection. How to configure this connectivity.
The client side tnsnames.ora file is as given below
# tnsnames.ora Network Configuration File: C:oracleproduct10.2.0client_1NETWORKADMIN nsnames.ora
# Generated by Oracle configuration tools.
CONTRACT =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 80.0.28.42)(PORT = 1521))
)
[code]......
The sqlnet.ora file of the client side is
sqlnet.ora Network Configuration File: C:oracleproduct10.2.0client_1
etworkadminsqlnet.ora
# Generated by Oracle configuration tools.
# This file is actually generated by netca. But if customers choose to
# install "Software Only", this file wont exist and without the native
# authentication, they will not be able to connect to the database on NT.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
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Dec 21, 2011
I need to get a way to find, The client fired the SQL Query is still connected to the database or not. For e.g.
I fire an SQL query using SQL Developer, Query approximately takes 5 mins to complete. As soon as I fire the query SQL devloper hangs and I close it using task manager.
Is there any way I can identify such session where SQL developer fired the query is terminated but the query fired is still running.
I have to identify such Orphan session and terminate it.
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Jun 15, 2013
I know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,
create public database link using 'orcl';
then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
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Oct 21, 2010
1. I installed oralce with Service_Name=DB1 it works fine,
2. I created another database with dbca named DB2,
3. I connected both system/password@db1 and system/password@db2 without any problem,
4. After rebooting the computer I can connect only the first database DB1 which I installed with Oracle installation. But, I can not connect to the 2nd database which I created with dbca. Error Message Shows: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
DB1 has no problem I can connect to that, but I can not connect to DB2 after rebooting the system. Now I need to know how to connect to DB2.
Quote:
connection messages:
oracle@pc ~]$ sqlplus
SQL*Plus: Release 11.1.0.6.0 - Production on Thu Oct 21 12:51:43 2010
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Enter user-name: SYSTEM@DB1
Enter password:
[code]....
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Jun 16, 2013
I know how to use database links in various forms, but I've been trying to think through how the authentication works for a connected user link in 11g. If I create the link like this,create public database link using 'orcl';then any user can use the link, provided they have an identical username/password in the two databases. With pre-11g passwords, it was understandable: the password was salted with the username, so the hash of the password would be the same in both databases, and I assumed that the logon through the link used some sort of IDENTIFIED BY VALUES mechanism. But in 11g, the salt will different in the two databases. So the hash will be different. And of course Oracle never stores the actual password. So I don't see how the authentication works.
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Oct 4, 2007
I am using Oracle 10g on Fedora Linux and trying to learn a bit of pl/sql. Here is the piece of code that I today tried to run in the SQL Plus window but it back with an error message saying SP2-0640 Not connected.
set serveroutput on
declare x number;
begin x :=7777;
dbms_output.put_line('x= ');
dbms_output.put_line(x);
end;
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Dec 28, 2010
Is there any way to tell what processes/sessions were connected to a DB after I get an ORA 20error. As you can see from the query results below, I did hit the max value of processes but I would like to know when it happen and who was connected.
I realize I can up the value, but before I do that I want to see what caused this to happen.
SQL> select * from v$resource_limit where resource_name in ('sessions', 'processes');
RESOURCE_NAME CURRENT_UTILIZATION MAX_UTILIZATION INITIAL_AL
LIMIT_VALU
----------
processes 221 1000 1000
1000
sessions 223 1020 1105
1105
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Mar 8, 2013
How can I tell version of exadata machine I'm connected to? Mean whether X2, X3-2. X3-8 ....
example: machinemodel=X2-2 Full rack A file named config.dat is mentioned in this doc [URL]
but I could not find that file on server I'm connected to (DB Host)
Any command, file I could use to get machinemodel?
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Jun 30, 2006
My Oracle DB is working properly till yesterday. When i tried connecting to it today using scott/tiger@orcl its not accepting.So i entered as system/system..it connected
when i tried to select instance_name from v$instance; it is giving me error
SP2-0640: Not connected
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Mar 27, 2013
I want to drop some users in Oracle DB using sqlplus but I am getting error:
SQL> DROP USER test CASCADE;
DROP USER test CASCADE
*
ERROR at line 1:
ORA-01940: cannot drop a user that is currently connected.But when I ran below command to know sessions connected I am not getting any results:
SQL> select sid,serial# from v$session where username = 'test';
no rows selected
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May 30, 2013
I have few doubts in rac environment
1.In 2 node rac while adding datafile to tablespace if you forget to mention '+'then what will happen whether it is going to be create or it throws an error if it creates where exactly located and other node users how to work on that tablespace .what all steps to perform that datafile is useful for all node users.
2. In Rac environment how to check how many sessions connected to particular node.
3)In Rac any node is evicted due to network failure then after we rebuild the network .Is there any steps to do manually to access the failure node after rebuilding the network or it will automatically available in cluster group which service is perform this activity.
4.While configuring cluster ware you choose voting disk and ocr disk location and which redundancy you will choose suppose if you go for normal redundancy how many disks you can select for each file either one or two?
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Jul 23, 2012
I first started database, then gone to option Run SQL command line. After that while creating table it is showing error like "SP2-0640: Not connected."
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Apr 6, 2010
I need a query to find out IP Adress for all currently connected users in V$session.
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Oct 20, 2010
If I'm looking on v$session - values in osuser column for some machines displayed with DOMAINNAME, and for other - without. Even same user (MYDOMAIN\ADMINISTRATOR) from 2 different machines displayed in 2 different ways on the same db:
MYDOMAIN\Administrator from machine A, and administrator from machine B.
Both machines are belongs to same windows domain. DB (oracle 10g) have no "DOMAIN" defined.
What make the difference? And can I somehow to affect this behaviour? I mean, can I define that all users will be displayed as DOMAINNAME\USERNAME or MACHINENAME\USERNAME(in case of no domain exists)?
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Feb 27, 2012
I'm a beginner in the PRO*C and I have this issue/I have to maintain a multithreaded C++ PRO*C application and has the following structure
1) Application runs waiting for requirements
2) When detects a requirement it creates a Thread to work
3) The thread connects to Oracle with a EXEC SQL CONNECT :uid IDENTIFIED BY :pwd; instruction
4) Calls some anonymous calls to execute a stored procedure
EXEC SQL EXECUTE
BEGIN
commit;
:Status:=stored_procedure(:param1, :param2);
commit;
END;
END-EXEC;
5) If anything went wrong then issues a EXEC SQL ROLLBACK WORK RELEASE; then reconnects and the thread die
6) If everything was OK then the thread dies, but never called a EXEC SQL COMMIT WORK RELEASE; to disconnect from Oracle
I don't know why never the application disconnects from Oracle, maybe is for performance. Sometimes the application crashes and I believe that maybe the error is for never freeing the connections, the PROC compile line is this
proc parse=full sqlcheck=full user=system/manager cpp_suffix=cpp iname=source.pc include="..Hdr" include="C:ORACLEORA81ociinclude" include="C:ORACLEORA81precomppublic"
Which is the way to implement the connections?, connect and disconnect when done? or just keep the connection alive? Which way has better performance, connect and disconnect or just keep the opened connection?
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Sep 6, 2011
I have a script which connects to Oracle and return 2 date value. few days back the database was down and when the script execute and return same garbage value in the spool file.
I added a exception handler WHENEVER SQLERROR EXIT 1 befor the connection start and after connection start. But in both the case it is also writing to the spool file.
I would like to exit the connection with a value <> 0 if any connection issue happens like (user id, password, database down error type of issue.) No information should go to the spool file
Output=`$ORACLE_HOME/bin/sqlplus -S /nolog << EOF
CONNECT $Usr/$Pwd@$Server
WHENEVER SQLERROR EXIT 1
spool ${ROOT_DIR}/.delta_date.tmp
[code]....
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Oct 20, 2010
If I'm looking on v$session - values in osuser column for some machines displayed with DOMAINNAME, and for other - without.Even same user (MYDOMAINADMINISTRATOR) from 2 different machines displayed in 2 different ways:
MYDOMAINAdministrator from machine A, and administrator from machine B.Both machines are belongs to same windows domain.
What make the difference?And can I somehow to affect this behaviour? I mean, can I define that all users will be displayed as DOMAINNAMEUSERNAME or MACHINENAMEUSERNAME(in case of no domain exists)?
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Oct 19, 2013
Earlier I used to connect properly with my Oracle database. But today when I am trying to connect following error is coming
Ora-03121: no interface driver connected - function not performed.
I have not done any changes in my database.
Operating System : Windows XP
Oracle : 9i (SQLPLUS 3.3)
Developer 2000 R2.1
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Sep 29, 2011
I have this table :
column1 column2
--------- ---------
value1 value2
value1 value3
value2 value4
value3 value7
value7 value1
value8 value9
What I was trying to retrieve is something like that:
Quote:
output_column
---------------
value1, value2, value3, value4, value7
value8, value9
I don´t care about the order of the values in the row. In other words, I want to get disjoint sets of data connected by any of both values.Every pair in the input table is unique.
I have seen in the web that it is possible to do using connect by and hierarchical retrieving but I've been trying to make a lot of combinationts and I can reproduce the output.
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Dec 3, 2012
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Feb 14, 2011
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We are using odatabase and odynaset libraries to connect and access the oracle database 11g.
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