Networking And Gateways :: Oracle 11gR2 Database - Performance Difference Between Windows PC And On VMware
Feb 9, 2012
We are having major differences in performance when accessing an Oracle 11gR2 database from two different environments.
I won't sadden you with the gory details of the full application but I will use an indicative example of our problem.
We have SQL Developer in both environments. In each of these SQL Developer instances is a defined a connection to the same database on another machine. So there is the PC looking at a database and a virtual instance looking at the same database.
Selecting the '+' sign next to 'tables' for that connection, on the PC the list of four tables comes back in 4 seconds but on the virtual instance the list of the same four tables comes back in 1 minute and 50 seconds.
This sort of timing issue is repeatable for all accesses to the Oracle database on the third machine.
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Sep 10, 2013
I have stand alone 11gR2 database. Do I need to configure the listener and have the tnsnames.ora file entries under Grid home and start the listener from Grid home or do I need to start from Oracle database home?
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Nov 25, 2011
One of my MOD_PLSQL based Oracle APEX Application is running on the web. I have almost 1000 web users to access the Application where at least 250-300 users are always on line. In Oracle EM web interface When run ADDM I see suggestions "Investigate the cause of SQL*Net more data to client" or something like this. and I am getting complains about poor server response. Here are my configuration of the system:
Database Server Host: DBServer (Oracle Database 10.2.0.3)
HTTP Server Host: OraHTTP (Oracle Companion CD 10g)
DADS.conf HTTP Server configuration
MOD_PLSQL database access for web clients.
How can I increase database connection performance?
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May 25, 2013
I am using 11gR2 on windows server. This is the query that runs many times a day and effect badly the performance of database. I don't have much idea about this query.
SELECT TO_CHAR(current_timestamp AT TIME ZONE 'GMT', 'YYYY-MM-DD HH24:MI:SS TZD') AS curr_timestamp, COUNT(username) AS failed_count
FROM sys.dba_audit_session
WHERE returncode != 0 AND TO_CHAR(timestamp, 'YYYY-MM-DD HH24:MI:SS') >= TO_CHAR(current_timestamp - TO_DSINTERVAL('0 0:30:00'), 'YYYY-MM-DD HH24:MI:SS')
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May 20, 2011
I'm trying to connect Oracle 11g database from Oracle 9i database, by creating dblink on Oracle 9i database. But my session got hang while i perform this. Here i'm giving the steps i followed on my both the database. Here Oracle 9i database is my source db and Oracle 11g is my target db.
Following steps/setting on Oralce 11g Database
SQL> SHOW PARAMETER SEC_CASE_SENSITIVE_LOGON
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
sec_case_sensitive_logon boolean TRUE
SQL> alter user SSA identified by SSA;
User altered.
Password File recreted on Oracle 11g Database Server
[oracle1@dev11g dbs]$ orapwd file=/backup/ora11gsoft/odb/OH1/dbs/orapwwbdata
ignorecase=n password=dev entries=5
Following steps performed on Oralce 9i Database
DROP DATABASE LINK "SSA11G.SSA_DB1.WBTEA.COM";
CREATE DATABASE LINK "SSA11G.SSA_DB1.WBTEA.COM"
CONNECT TO SSA
IDENTIFIED BY SSA
USING 'DEVDATA.DEV11G';
Database link created.
SELECT * FROM SSA.SSMASTER@SSA11G;
And the hangs for ever.
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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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Nov 17, 2011
I have created two database one for production and another one for test.I created both database in shared_server mode(by using dbca),after than I did not change anything.My problem is when i connect to test database from outside lan through static ip its working well,but when i connect to production database which is not connected. I checked and compared two databases,then I find there are some changes in dispatcher and mts_ dispatcher parameters.And I used this query to check the shared_server status,
ie.select * from v$shared_server,
the output of this query is attached with this post.
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Jul 5, 2011
Do I need to install the Oracle client in order to use putty to connect to the database?
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Jul 13, 2012
connecting two oracle database in two different server.I installed Oracle 10g XE in both system.Both system act as Server.I need to connect both server using database link concept.
how to use the tnsnames,ora and listener.ora file for connecting both system.
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May 23, 2011
We want to configure HSODBC on HP-UX 11.23 for Oracle Database 10g R2 in order to establish a DB link from Oracle to Netezza.We have installed the ODBC Drivers too..Currently we have not done any configurations and we go via an AIX box to establish a link.We want to get rid of the AIX box and instead establish directl link towards netezza from HP-UX Box.
Does Oracle support have some guidelines or steps to setup HSODBC on Oracle database 10g r2 residing on HP-UX 11.23 towards Netezza?
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May 24, 2011
Connecting Oracle to SQL Server via database link.
I am trying to connect from Oracle 10G to a SQL Server database. I have looked at the manual and i will admit that i am finding the documentation quite difficult to follow. There seems to be several options to use but none of the documentation describe how each option works.
As an example, i have been given the following information on the database i need to connect to (i.e. the SQL Server database)
- Username
- Password
- Database Name [lets assume the database name is data_extract]
To connect the above i made the following changes
$ORACLE_HOME/hs/admin/inithsodbc.ora
---------------------------------------
HS_FDS_CONNECT_INFO = data_extract
HS_FDS_TRACE_LEVEL = 0
$ORACLE_HOME/network/admin/tnsnames.ora
---------------------------------------
sqlserver.db =
(DESCRIPTION =
[code]....
Note: In listener.ora, i only added the last SID_DESC entry. I then went on and created the database link as shown below
create database link sqlservdb using 'sqlserver.db';
When i try to access a table i get the following error
sqlplus> select * from TESTTABLE@sqlservdb;
select * from TESTTABLE@sqlservdb
*
ERROR at line 1:
ORA-28545: error diagnosed by Net8 when connecting to an agent
Unable to retrieve text of NETWORK/NCR message 65535
ORA-02063: preceding 2 lines from ORASQLSERVER
A couple of things i am not sure of:
- Where do i specify the username and password to access the sql server from the oracle db to the sql server db
- Having read around on the internet, i can see some people refering to a DSN datasource. I am told that the information that i have is all i need. Is this correct or do i need something else?
- The sid i specified in inithsodbc.ora and tnsnames.ora is actually the sql server database. Is this correct?
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Feb 6, 2011
setup the connection between oracle developer and database.
i found the file called tnsnames.ora however, i cant open it. i dont know if i need to choose a program to open it or download extension for it.
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Dec 6, 2011
can i start multiple listeners in one oracle database ?
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May 17, 2011
But i do a lot of work-arounds to make sure the installation does not make corrupt my OracleAgent,OracleService and OracleDataGatherer. If i just let the installation do its thing i have problems with my libraries, and can't start anything.
The errors are : Procedure entry point 'BlaBla' could not be located in the Dynamic Link library 'AnyName'.
I notice that i have 2 versions of the libraries in OracleHomeBIN (one version 8, one version 11). The programs that start the OracleAgent,Service and DataGatherer call the old libraries but expect to find values that can be found only in new libraries.
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Oct 31, 2013
I have an issue during the database configuration using DBCA at 85% it blocs, then it displays an error asking to reconfigure ORACLE_UNQNAME.
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Nov 21, 2010
I have set password on the listener and set the local_os_authentication parameter to "OFF", whenever i start/stop listener through "lsnrctl" ,it works fine and asks for password but i can stop/start listener through windows services without giving any password.
what is the use of setting password on listener if any body can start/stop it through services utility in windows xp sp3.
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Sep 29, 2011
We've been administering a multiple instance production dB server with 3 different versions of Oracle installed.Currently, each of Oracle version had corresponding listener.Oracle 9i had 2 instances, 10g 6 instances & 11g 2 instances also.how I can integrate this 3 listeners into 1.
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Aug 28, 2013
I am installing RAC 11GR2 in VMWARE on OEL 6.3. Everything went smooth but when i tried to configure ASM , I get below messages.
[oracle@RAC1 ~]$ /etc/init.d/oracleasm configure-bash: /etc/init.d/oracleasm: No such file or directory.
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Nov 4, 2010
I installed Oracle 10g (10.1) in Windows Server 2003 and i am able to connect to oracle using using SQL net. But when I tried to connect this using SQL Net from Windows XP, I am getting ORA-12560: TNS:protocol adapter error. But when I tried to connect as SYSDBA user, I am able to login in SQL plus. But for a normal user, not able to log in.
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Feb 3, 2013
am trying to install rac 11gr2 config on linux 5.5 on vmware server.
following doc:
[URLs]...
but as in the first step VMware Server Installation:First, install the VMware Server software. On Linux you do this with the following command as the root user.
# rpm -Uvh VMware-server*.rpm
i couldn't find any where on linux disks.
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Feb 21, 2010
I want connect mssql in oracle by orale Gateways 11g
my environment:
windows Wista
oracle 11.1.0.7.0
Oracle Database Gateways 11.1.0.7.0
SQL SEVER2008
these soft in one computer.
my steps :
1. set initdg4mssql.ora
2.set listener.ora
3. set tnsnames.ora
4.start lsnrctl
5.use SYSTEM/ORACLE@DZCDB
logined. create dblink and test.
but it's error. i want to know where is the error.
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May 2, 2011
I have facing problem while taking backup on Windows 7 client of Oracle 11g R2 database. I have installed oracle 11gR2 for windows on windows 7 machine. I have created a directory like below in database.
On Database Server
SQL> create directory win_expdp_dir as 'd:expimp';
Directory created.
SQL> grant read, write on directory win_expdp_dir to lab;
Grant succeeded.
On Windows 7 machine (client machine)
D:appproduct11.2.0client_1BIN>expdp lab/lab@wbdata.wbh-db11g DIRECTORY=win_expdp_dir DUMPFILE=lab.dmp LOGFILE=lab.log
Export: Release 11.2.0.1.0 - Production on Mon May 2 12:51:44 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
I have give all sharing rights on d:expimp directory. My main question is why i'm getting this error. Is there any thing missing in setup. how to take export on windows 7 client.
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Jul 5, 2012
I am trying to create a database link from the 11g database to the 10g database using:
create database link ORCL10R2 connect to <username10g> identified by <password10g> using <db10g>;
It Returns
Database link created.
select sysdate from dual@ORCL10R2 returns error:
ERROR at line 1:
ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA
what changes I need to make to tnsnames and listener at both servers.
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Nov 2, 2011
I installed Oracle Express on my Windows 2003 Enterprise server. And right off the bat I cannot connect to it via command line. I have googled and read many sites, but am still getting the same error, no matter what I do. I am newbie again (was a DBA in 1990...when I used to have the same error and fix it in seconds...not sure why this problem still lingers in Oracle) so most likely I am overlooking something. Below are my tnsnames.ora and liserner.ora files
tnsnames.ora
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = myservername.domainname.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)
[code]....
# 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)
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Jan 2, 2011
I've migrated from Oracle 9i to Oracle 11gR2, when i'm checking my application on Oracle 11gR2, i found that some of the query result are differed from the previous version of Oracle 9i, which is very illogical to me. I've checked the data for all related tables which are involved in one of the query. I've checked all indexes also. Still i'm not convinced that Oracle is doing anything wrong. I cannot recreate the whole scenario here, because of many tables involved in that query.
One of the sample query code.
select 'ProductMaster' producttype,e.schemecd,e.SCHEMESHORTDESC as SCHEMEDESC,to_char(e.schemefrdate,'dd/MM/yyyy')as schemefrdate, to_char(e.schemetodate,'dd/MM/yyyy') as schemetodate,e.mkid ,e.countrycd,e.statecd,e.districtcd,f.schemetype, a.productcd,a.packsizecd,a.packtypecd,a.sortorder1, a.countrycd,a.statecd,a.districtcd,a.p_uniqueid,a.mrp, (a.productcd ||'-'||b.countryname||'-'||c.statename||'-'||d.districtname|| ' -pkt.prc:'||a.pktprice ||' -mrp:'||a.mrp) as pcode
from wb.wbproductdetails a
[code]......
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May 30, 2010
How many listener we can have in one database? How many users can be support by one listener?
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Nov 22, 2010
i want to restrict particular ips ,for that i specified
TCP.VALIDNODE_CHECKING= YES
AND
TCP.INVITED_NODES=(IPADDRESS)
in sqlnet.ora file but whenever i connect to database from the particular specified IPADDRESS , the database allows the connection to happen ( doesnot restrict it),
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Jul 14, 2010
i have a inventory system and trying to connect remote database one by one throught two static ips. If first ip is not ping then go to 2nd ip only when open the login.fmx page
following examples are my tnsnames.ora
IP1.WORLD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 117.65.48.12)(PORT = 1521))
(CONNECT_DATA = (SID = ORCL))
IP2.WORLD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 117.65.48.13)(PORT = 1521))
(CONNECT_DATA = (SID = ORCL))
i am not understand what i write the code on-logon trigger
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Feb 14, 2011
i want to connect to a database that is out side my network and my application is running on forms 6i and database version is 10g .
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Feb 1, 2012
I am getting beloww error very frequently in database log and not able to connect to the database.
************************
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for 64-bit Windows: Version 11.2.0.2.0 - Production
Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.2.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.2.0 - Production
Time: 01-FEB-2012 18:00:34
Tracing not turned on.
Tns error struct:
ns main err 12535
TNS-12535: TNS:operation timed out
ns secondary err 12606
nt main err 0
nt secondary err 0
nt OS err 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.179.1.24)(PORT=65503))
WARNING: inbound connection timed out (ORA-3136)
Wed Feb 01 18:00:44 2012
*****************
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