RAC & Failsafe :: JDBC Connection To A 10g Database?
Mar 30, 2005
The problem i mentioned in my last posting "CRS installation/PRIF-10: failed to initialize the cluster registry" was due to the fact i was using Redhat Linux 9 that seems to have some missing packages. I installed White Box RH 3 and everything worked fine.
if it's possible to connect to a 10g RAC database using the jdbc java thin client. the java thin client requires an ip, and database sid. I am running a two node cluster and i have two ip's and a service name that uses TAF option.
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Jul 18, 2012
I connection to TimesTen as follow:
String url = "jdbc:timesten:direct:dsn=my_ttdb";
String username = "ADMINISTRATOR";
String password = "";
Connection connection = DriverManager.getConnection(TestTT.url, TestTT.username, TestTT.password);
I wonder if this JDBC Connection is a TCP/IP connection on the backend? If this is not a TCP/IP connection, how can I make a connection with TimesTen via TCP/IP protocol?
dsn:my_ttdb configuration likes:
[my_ttdb]
Driver=/home/tttest/TimesTen/tt1122/lib/libtten.so
DataStore=/home/tttest/ttdata/database/my_ttdb
LogDir=/home/tttest/ttdata/logs
PermSize=40
TempSize=32
DatabaseCharacterSet=ZHS16GBK
OracleNetServiceName=orcl
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Aug 4, 2010
I have installed 2 node RAC -11gR2 on ORACLE VM Server 2.2.1.now, I want to give tnsentry to my dev team to use this RACDB going forward.I am using scan name in tnsnames.ora file. Also I have make scan name entry in /etc/hosts not in the DNS.
I have below entry in RACDB server...
RACDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = RWCORA-cluster-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = racdb)
)
now just for testing purpose, I added this tnsentry in my machine to check the connectivity.I have to add scan name with IP address in /etc/hosts --. and try to connect sqlplus sys@rwcdb as sysdba --> not workingI have to add scan name with IP address , and two RAC VIPs (of both nodes) in /etc/hosts -- and try to connect sqlplus sys@rwcdb as sysdba --> then its working...but again SQL*Developer is not able to connect.
I have make below entry in my machine's /etc/hosts file:
10.40.0.51 RWCORARAC1-vip
10.40.0.52 RWCORARAC2-vip
10.40.0.50 RWCORA-cluster-scan
perfect link through which I can connect OCI, JDBC connection from client side.
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Sep 25, 2013
how to set connection property "oracle.jdbc.thinLogonCapability"
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Aug 21, 2013
I am not able to connect to ORACLE ODA 11g. but using sqlplus its getting connected with below credential.
URL------------------- jdbc:oracle:thin:sacblmdbuser/sacblmdbuser@10.66.12.229:1521:OVPINHA
Oracle JDBC driver loaded ok.
Unable to create connection
java.sql.SQLException: Io exception: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=186647296)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
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Jul 17, 2013
have a problem while i am trying to connect to database through JDBC here is my code,i am using oracle11g express edition import java.sql.
Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement; public class connectiontoDB { public static void main(String[] args) throws Exception { // TODO Auto-generated method stub try{ Class.forName("oracle.jdbc.driver.OracleDriver"); Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL","citi","citi"); Statement stmt=con.createStatement(); stmt.executeUpdate("create table user(id number(10))"); System.out.println("connected to database successfully"); } catch(Exception e){ e.printStackTrace();
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Apr 3, 2012
As you see in the following MY_DB_URL there are two hosts for one SID. This is works perfectly for oracle driver. When one of them is gone down, connection establishes with the other.
MY_DB_URL = jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xx.xx.104.18)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=xx.xx.104.19)(PORT= 1521))(FAILOVER=true)(LOAD_BALANCE=false)(CONNECT_DATA=(SERVER=DEDICATED)(SID=SIDNAME_1)))
But i have a problem. Our partner uses Golden Gate product, and they said that they must install two different oracle with two different SID names. (For Example one of them is SIDNAME_1 the other is SIDNAME_2) So i can't use this URL in my application.
Is there a way to define a DB connection URL for two different SID names in a single URL?
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Jul 28, 2013
How to know the version of Oracle and JDBC of remote databases that is accessing my database through DBLInk.
For example I have a database A , B database is using my database Through a dblink.Now I want to know the version of oracle and jdbc which working on B.
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Jul 21, 2010
I have an issue with an Oracle 9 database where I can connect if I do not specify a database to connect to but when i do specify one i get an error. For example, my database is called WEB. If i open sqlplus and type connect username/password it will connect fine. If I type connect username/ password @web I get an error.The full error that appears in the log is:
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12546: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00516: Permission denied
32-bit Windows Error: 5: Input/output error
I have checked the tns entries and listener file and both are fine. Here are the entries:
TNSNAMES:
WEB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = web)
)
)
[code]....
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May 13, 2010
I have just installed Oracle Forms 11g with the Weblogic web server. I have a local installed database, and access to our network databases also.
I can do a TNSPING and get valid results back from that. I can connect with SQL Plus, and SQL Devloper. However, I cannot connect with the Forms 11g Forms Builder. where to copy the TNSNAMES.ORA file for use with Forms 11g?
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Sep 13, 2012
Tell me the difference between Oracle RAC and Non RAC database including commands and architecture?
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Sep 4, 2012
I have 3 questions.
I have 11.2.0.1 database on Windows 2008 R2 SP1.
1) While connecting to the database as sysdba (sqlplus "/as sysdba"), it takes about 12 to 15 seconds what things I need to check/change so that connection will be faster?
2) Also, I have read somewhere that changing the sga/memory parameters connecting to the database. is it true?
3) This is not concerned with above 2 questions. What should be the memory parameters size for a 8 gb database?
What I have is:
Total System Global Area 1068937216 bytes
Fixed Size 2182592 bytes
Variable Size 1027605056 bytes
Database Buffers 33554432 bytes
Redo Buffers 5595136 bytes
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Jun 19, 2012
Our database is on one site . There is a form which is used by users on another site. The internet connection is lost sometimes and the form that they use looses connection to the database. What I would like to do on the form is whenever the connection is lost to the database i,eORA-03114,I want to reestablish the connection so that the form can be used by users all the time.
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Jun 8, 2011
I´m just having a problem whit the connection between Oracle Forms 6i and Oracle Database 11G. Is just when i login to the database schema i cant log in using Forms.
TNS Names its already configured, No problems when i log in using Toad and using the TNS Names from Developer's 6i tool. I can log in just when i change the schema(user) password from the database (thats the rarest thing) and log into the application.
So whenever i want to login to the application i must to change the schema password, i need to use it directly.
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Aug 8, 2011
Toady i have installed oracle forms 10g and oracle 10g db when i run my form it gives me this error how can i resolve it
"ora-12154 tns could not resolve the connect identifier specified"
View the image below:
Here are the values in forms 10g tns
# tnsnames.ora Network Configuration File: C:DevSuiteHome_1
etworkadmin nsnames.ora
# Generated by Oracle configuration tools.
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
[code].......
and here the values of forms 10g SQLnet
# sqlnet.ora Network Configuration File: C:DevSuiteHome_1
etworkadminsqlnet.ora
# Generated by Oracle configuration tools.
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (LDAP, TNSNAMES, EZCONNECT, ONAMES, HOSTNAME)
(description =
# (address=(protocol=tcp)(host=localhost)(port=1383))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(connect_data=(rpc=on))
)
What changes should i make to overcome this problem.
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Jan 29, 2013
I am gettting error message databse connection closed itried
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
[code]...
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Dec 23, 2009
I am connecting to Oracle 9i using JDBC in my JSP/Servlets web pages. I am closing all my connections in Finally blocks.
Everything works great during the day with JDBC and Oracle.But after a Web crawler runs through our web server at 3 AM the next morning a v$session check shows several lines of JDBC Thin Client inactive status. find exactly what sql statement or program that could be causing the JDBC Thin Client to show up?
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Dec 28, 2012
I want to restart a 10g database on ASM ? startp and shutdown sequence?I would like to shutdown everything including database, ASM and cluster and startup again
I read at various places but not sure of the sequence For database DB with database instance DB01 and DB02 having ASM instances ASM01 and ASM02 on node1 and node2, I understand following would be the sequence
1)
Login as root on node1
cd $CRS_HOME/bin
./crsctl start crs
2)
Login as root on node2
cd $CRS_HOME/bin
./crsctl start crs
3)
login as oracle on node1
$ORACLE_HOME/bin/srvctl start nodeapps -n node1
4)
login as oracle on node2
$ORACLE_HOME/bin/srvctl start nodeapps -n node2
5)
login as oracle on node1
start ASM instance on node1
$ORACLE_HOME/bin/srvctl start asm01 -n node1
6)
login as oracle on node2
start ASM instance on node2
$ORACLE_HOME/bin/srvctl start asm02 -n node2
7)
Start oracle database (from any node)
$ORACLE_HOME/bin/srvctl start database -d DB
A. confirm if the above sequence is correct?
B. This sequence if corrrect, is same for 10g and 11g?
C. Is shutdown sequence exact reverse of the above?
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Jan 17, 2003
Creating RAX 9.2.0 on SP2-AIX-4.3.3 64 bit hangs (2 node configuration) tablespacess are on VSD/raw partitions.
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Feb 26, 2013
Just installed the new 2.0.8 version. Its been a while I am interested on using PM for our company.The problem I have is creating an Oracle DB connection. When I create a new Oracle DB connection, and test it, Steps 3 and 4 fail.What is strange is that I followed the following procedure in PM 1.9-825 and worked fine. I am wondering if something changed in the new PM 2.0.8 version (I noticed that php_oci8.dll was commented out in php.ini).
Oracle Version is 10GR2
PM installed on clean XP sp3
1. Got a new Windows XP SP3 PC
2. Installed PM 2.0.8
3. Edited php.ini and uncommented [PHP_OCI8] and extension=php_oci8.dll
4. Installed oracle instant client “instantclient-basic-win32-10.2.0.5” in c:oracle
5. Installed oracle instant client “instantclient-sqlplus-win32-10.2.0.4” in c:oracle
6. Added c:oracle in PATH environment variable
7. Created ORACLE_HOME = c:oracle environment variable
8. Added TNS_ADMIN = c: environment variable
9. Copied working tnsnames.ora file into c:
10. Rebooted.
-------------------------------------
1. Tried sqlplus connection to my oracle db and worked.
2. Launched PM
3. Created a new process
4. Created a new DB connection as follows:
a. Engine:Oracle
b. Server:192.168.xxx.xxx
c. Database name: my_name (where my_name appears in tns_names.ora)
d. Username:my_username
e. Password:my_password
[code]....
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Jan 11, 2005
I'm trying to connect to multiple Oracle 10g databases (failover) over the JDBC thin client, and when I run the following, I get: java.sql. SQLException: Io exception: NL Exception was generated
connection = DriverManager.getConnection("jdbc:oracle:thin:@DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = dbdev) (PORT = 1521))) (CONNECT_DATA = (INSTANCE_NAME = orcldev)))", "scott", "tiger");
I eventually want to put multiple ADDRESSes in that string, but right now I'm trying to get it to work with just one! I've tried multiple variations of this, like changing INSTANCE_NAME to SID or SERVICE_NAME, and using the internal IP address for the HOST dbdev (see below). Here's the tnsnames.ora file used by SQL*Plus on the same client machine:
ORCLDEV.world =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.132)(PORT = 1521))
(CONNECT_DATA =
(SID = orcldev)
)
)
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Feb 2, 2013
here we have san server and rac database two node database.i want to know how can i create directory on rac database. i know how to create directory on single database but i do not know how can i create directory on rac database.
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Oct 20, 2010
2 Database.
TP1 Database - Oracle RAC 11g (2 Node)
TP2 database - Single Instance
Is it possible to migrate from RAC to Non-RAC(Single Instance)?
Our requirement is, 3 Oracle Schemas@TP1(having DW data) we need to move it to TP2 Database.
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Jul 21, 2011
srvctl stop database d devdb1
After that i got this below status .how to make it up Steup by steup procedure
crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.devdb.db application ONLINE ONLINE islr...v345
ora....b1.inst application ONLINE ONLINE islr...v333
ora....b2.inst application ONLINE ONLINE islr...v345
ora....dbap.cs application OFFLINE OFFLINE
[code]...
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Mar 9, 2011
we had our Oracle RAC database at primary and Standby database as DR. It was running in 10g (10.2.0.1.0) in HP UX 11i platform.
We need to upgrade both the setups from 10.2.0.1.0 to 10.2.0.4.0 . I will go through the upgrade guide, i like to know is there any special case for upgrading when we do for both primary and standby database.
And whether i need to create a new Oracle home with 10.2.0.4.0 software or i can upgrade in the same oracle home which already exists.
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Aug 17, 2012
We have 5 node RAC database. I want to user 2 node for OLTP and 3 for DSS system. Guide now to create service for the requirement.
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May 23, 2012
we encounter a problem with a 2-nodes RAC with 11gR2 SE : Database RAC is correctly running but we encounter problems using RAC TNS entry, obtaining the message ORA-01033.We can access to the DB using a TNS entry using each one of IP addresses but when we use the SCAN address, it fails. 2 weeks ago RAC2 node could connect perfectly with the SCAN address but RAC1 (used as a client) obtained error message almost 30% of tries.
We made a reboot of RAC1 node and now SCAN address works correctly from RAC1 and RAC2 (used as a client) fails systematically with SCAN address but works perfectly with direct access to the database.On both nodes, SCAN address is perfectly resolved by DNS server, cluster seems correct, listeners seems correct...We have opened an SR on Metalink 4 weeks ago but we don't progress.
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Aug 13, 2013
Would there be any issue in application and database when i down RAC database instance using below srvctl command ?
srvctl stop instance -d DB -i DB1
srvctl start instance -d DB -i DB1
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May 13, 2013
if it is possible to create a failover setup without RAC and DG...For example:
I have 11.2.0.2 database (with EBS 12.1.3) on dbnode1...I would like to create another node to failover my primary datbas in case of any failure.
Steps i will follow:
1: creat dbnode2
2: install same os as dbnode1
3: install same oracle as dbnode1
4: share dbnode2
database between dbnode1
and dbnode2
Now, if hardware fails on dbnode1, can i manually failover and start my database on dbnode2?
I know we can do with RAC and DG,BUT without RAC and DG If not possible..
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Apr 11, 2013
Is there any way, in Oracle where I can find out if there is any process from some machine which has been successfully connected database ?
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