RAC & Failsafe :: Using One EC2 Machine To Host Several Linux VMs Using Virtual Box

Dec 22, 2010

How to get a RAC running in an EC2 environment?

It isn't possible to use one EC2 machine for each RAC node because EC2 can't handle the virtual IPs, but I had thought that I could use one EC2 machine to host several Linux VMs using Virtual Box (the same way that I use Virtual Box on a Windows host). But I can't get Virtual Box working on EC2. The only relevant advice I can find on this is comments to the effect that running any virtualization product with a Xen machine as host is not a good idea.

I do realize that this isn't a 100% Oracle question, but if set up a RAC on an Amazon Cloud machine,

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Accessing Oracle On VirtualBox From Host Virtual Machine?

Jul 18, 2013

I have a Host system of windows 8, installed the Virtual Box Latest edition.The guest OS is the oracle Linux that came with the Pre-Built Developer VMs from Oracle.The VM is set to HOST ONLY network setting. Now, the thing is that i want to access the Oracle in the guest machine from my windows host machine.the guest OS shows the IP address as 192.168.56.101. I can ping the IP address from the HOST machine, but cannot connect theSQL developer to the oracle in the guest OS from the host machine. It keeps on saying the Network adapter cannot connect. do not say that install the oracle in window itself. I actually want to do the same on my macbook pro as that is my primary machine.

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RAC & Failsafe :: Configure 10G On LINUX 5.0 Machine

Mar 9, 2011

provide me the online material or some links where i can follow the instructions step by step to configure 10G RAC on LINUX 5.0 machine.

I have 3 separate machines having Linux 5.0 . I want to do this for R&D purpose.

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Virtual Host Name Must Be Static And Resolvable Consistently On Network

Apr 2, 2013

10g
SLES 11

Oracle® Enterprise Manager Grid Control Installation and Configuration Guide
10g Release 5 (10.2.0.5.0)

Part Number E10953-1518 Configuring Enterprise Manager for Active and Passive Environments18.1 Using Virtual Host Names for Active and Passive High Availability Environments in Enterprise Manager Database ControlSet Up the Alias for the Virtual Host Name and Virtual IP Address

You can set up the alias for the virtual host name and virtual IP address by either allowing the clusterware to set it up automatically or by setting it up manually before installation and startup of Oracle services. The virtual host name must be static and resolvable consistently on the network. All nodes participating in the setup must resolve the virtual IP address to the same host name. Standard TCP tools similar to nslookup and traceroute commands can be used to verify the set up.

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Testing 9i On Virtual Machine Under RHEL 4.8

Sep 1, 2010

I work as a Sys. Admin. for several RHEL 3.8 servers, most of them are clusters of 2 machines. All these servers are running Oracle 9.2.0.7 database. They are running fine on a separate filesystem. So everytime the system has to be formatted for some particular reason, there is no need to re-install the database.

I am trying to make some tests by running the same filesystem containing the oracle database in a fresh Red Hat Enterprise Linux 4.8 X86_64 Install. This task has become impossible, and I'm not quite sure why.

I installed all the compat- packages required for a fresh oracle 9 install in a RHEL4 machine, but at the time of stating the STARTUP sentence, it gives me the next error:

CMCLI ERROR: OpenCommPort: connect failed with error 2.
CMCLI ERROR: OpenCommPort: connect failed with error 2.
CMCLI ERROR: OpenCommPort: connect failed with error 2.
CMCLI ERROR: OpenCommPort: connect failed with error 2.
CMCLI ERROR: OpenCommPort: connect failed with error 2.

After this error (repeated) it says something like: Cannot start an already running database.... But if i stat a shutdown sentence, it says that the instance has not been initialized....

I don't know whether i have to re-install all the oracle software in order to make a clean install in the new kernel version or not, i tried to apply a patch, and the oracle installer recognized the installation i had.

I think it might be because the original system is configured to work as a cluster, and i'm running it on only a virtual machine.

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Windows :: Oracle 10g On Virtual Machine 2003 X64

Jul 9, 2010

Does already installed Oracle 10g (10.2.0.1) on a windows 2003 server x64? Do you notice strange behaviors, any errors after the installation?

Does already installed Oracle 10g on a windows virtual machine? Are there any prerequisites?

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Netca - Unexpected Error Has Been Detected By HotSpot Virtual Machine?

Sep 17, 2013

solving the error below?

[oracle@localhost Desktop]$ netca
Oracle Net Services Configuration:
# An unexpected error has been detected by HotSpot Virtual Machine:
# SIGSEGV (0xb) at pc=0xa23ae762, pid=7422, tid=3075933888
# Java VM: Java HotSpot™ Server VM (1.5.0_17-b02 mixed mode)
# Problematic frame:
# C [libclntsh.so.11.1+0x429762] snlinGetAddrInfo+0x1b2

An error report file with more information is saved as hs_err_pid7422.log

#If you would like to submit a bug report, {URL}...

/u01/app/oracle/product/11.2.0/db_1/bin/netca: line 178: 7422 Aborted (core dumped) $JRE $JRE_OPTIONS -classpath $CLASSPATH oracle.net.ca.NetCA $*

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Installation :: 11gr2 Setup Shows Error On Virtual Machine

Jun 4, 2013

I have a virtual machine which have Windows Server 2008 R2 Datacentre 64-bit.

When I install Oracle Database 11gR2 and click on "SETUP" file, a message box namely JAVA VIRTUAL MACHINE LAUNCHER and display below error;

_"Could not find the main class. Program will exit."_

Same setup runs successfully on my server with Windows Server 2008 Enterprise.

Is it 11gr2 supports a virtual machine which have Windows Server 2008 R2 Datacentre 64-bit ? or some other?

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Client Tools :: How To Configure SQL DEVELOPER Via Virtual Machine Oracle Database

Mar 21, 2012

i have oel installed on my parallel Virtual machine.

i have a problem with configuring sql developer to the oracle database which is located in my virtual machine.

my os is windows7 32 bit.

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Forms :: Host Common On Linux

Oct 27, 2010

My database as well as application on linux. I want to execute this command on linux. I need equivalent code.

host('cmd /c E:data empITC1'.bat');

code of ITC1.bat is
echo off
sqlldr userid=user_name/pass@database control=E:data empITC1.ctl log=E:data emplogITC1.log

echo ........

control file as well as bat file exist in respective folders.

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Installation :: Oracle Database 11gR2 On Virtual Box on Windows 32bits Machine

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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Oracle 11g - Java Virtual Machine Could Not Find Main Class Program Will Exit

Jul 26, 2013

In my Organization I am trying to install oracle ODTwithODAC112030 but one Error showing that is java virtual machine could not find main class program will Exit. 

Server Configuration Dell power Edge r510 Windows 2003 64 bit serv PAck 2 Citrix Presentation server 4.5 .

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RAC & Failsafe :: Two Node - Configuration On Oracle Virtual Box

Mar 27, 2013

I am configuring two node RAC on oracle virtual box. Did its mandatory to configure DNS on both nodes before Rac installation? Whats the purpose of DNS in RAC. And if its mandatory did i have to configure DNS on each node separately?

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Enterprise Manager Host Credentials On Linux

May 10, 2011

Am using Oracle 10g on redhat linux machine.

My Agent Connection to Instance is down . I am trying to start it up using EM when i enter my user name and password on host credentials connection fails (am using a suer that installed my oracle software).

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Forms :: Using Host Command To Run Commands From Linux?

Jul 6, 2010

i was trying to use the host command to run the commands from linux. however, it doesnt work.

PROCEDURE compile_procedure IS
c_success boolean;
c_bare_filename varchar2(50);
command_string varchar2(1000) ;
BEGIN
c_bare_filename := substr(:B_DEV.B_DEV_ITEM_FILENAME,instr(:B_DEV.B_DEV_ITEM_FILENAME,'',-1)+1);

[code]....

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Server Administration :: Not Ping Linux Install On Vmware From Host Os Win 7?

Sep 12, 2012

my host os is win 7 ,,,,i install vm ware and install linux on vmware...now i want to ping linux from win 7...how i can do it... firwall is disable.

[root@lnxdb ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
#
Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:0C:29:22:FC:FF

[code]...

i want to ping the guest os linux install on vmware to os win7 host ...how?

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Unable To Start Oracle Database 11g On Linux Machine?

Nov 12, 2012

Issue : NOT able to start the Oracle Data Base 11g on Linux machine

I've successfully installed Oracle-DB-11g on my Linux machine.

Note : I haven't declared or exported any variable(s) , actually I'm not sure how and where to do this.

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Performance Tuning :: Oracle10g Standard Edition On Linux Machine

Jan 16, 2012

In my production ENV there is two node RAC database is running , and on both machine RAM size is (35GB on node1,41GB on Node2) and other configuration is like below.

SGA SGA_TARGET DB_BLOCK_SIZE DB_MULTIBLOCK_READ_COUNT
NODE1 16G 14G 8K 16K
NODE2 16G 14G 8K 16K

Our Database size is 700GB approx.

The above SGA configuration is ok or need to be increase the size of SGA , our HIT RATIO is almost 99%.

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RAC & Failsafe :: Multiple Oracle Home Machine On Two Node ENV?

Mar 6, 2012

I have two node RAC database running on linux machine (Oracle10G SE), our requirnment is to install new oracle binaries for Oracle10G EE on diffrent home location.after install Oracle10G EE binaries on new oracle home , i want to point our existing database to new Oracle10G EE home to adotp a features of Oracle10G EE features.

But at the same time i dont want to deinstall our Oracle10G SE binaries.So it is possible to rollback our process to point our database back to Oracle10G SE from Oracle10G EE in case anything going wrong.

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RAC & Failsafe :: Cannot Change Owner Of Cifs Mount On Linux

Nov 6, 2008

We are configuring NAS device on linux for RAC installation.

ISSUE: I had mounted NAS device to Linux server.As root user I can create directory but cannot change owner of cifs mount.It say permission denied.When I try to change permission it doesn't work.The mount point show the uid and gid as 33 and permissions drwxr-xr-x

I had mounted using the following command

#mount -t cifs storage:/ocr1 /u02/ocr1 -o username=XXXX,password=XXXX,uid=oracle,gid=dba

Permission denied

[root@SSIPL-WRKST-116 u02]# chown -R oracle:dba ocr1
chown: changing ownership of `ocr1': Permission denied
chown: changing ownership of `ocr1/ss': Permission denied
[root@SSIPL-WRKST-116 u02]#

Change owner

[root@SSIPL-WRKST-116 u02]# ls -lrt
total 0
drwxr-xr-x 3 33 33 0 Dec 4 2006 ocr1
[root@SSIPL-WRKST-116 u02]# chmod -R 777 ocr1
[root@SSIPL-WRKST-116 u02]# ls -lrt
total 0
drwxr-xr-x 3 33 33 0 Dec 4 2006 ocr1
[root@SSIPL-WRKST-116 u02]#

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RAC & Failsafe :: ORACLE Server Failover Parameters In Windows Server Machine.config File

Jan 17, 2012

working on setting up connection between a Windows 2008 server and a pair of Oracle 11g DBs in a RAC Cluster. One Database (let's say DatabaseA) is in one data center, and the other (DatabaseB) is an a secondary, backup database. The RAC Cluster is all set up, working fine, etc. However, I Need to set up the machine.config file on my Windows Server, to go only connect to DatabaseA, unless it fails, in which case, we want it to connect to DatabaseB. Think we could do this if the host app server was Linux/Unix, but it is windows, and I just don't have the background as to the parameters to set up in the machine.config file. They are similar, but different, and we want a very specific behavior (use DatabaseA, unless fails, then DatabaseB). Application is .NET 4.0 app.

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Database Auto Start With Machine On And Shutdown With Machine Shutdown

Sep 2, 2012

i install oracle 10g on linux on perform the following step but my database is not auto start with the machine

Automatic startup and shutdown oracle on linux Oracle database server provides two scripts to configure automatic database startup and shutdown process.

The scripts are,
$ORACLE_HOME/bin/dbstart
$ORACLE_HOME/bin/dbshut

Now let's look at unix level script. When a unix machine boots it runs scripts beginning with Snnname in /etc/rc3.d.

-Here the number nn indicates the order in which these scripts will be run. The name just indicates the function of the script.

In the same way shutdown scripts are named as Knnname which are run from /etc/rc0.d.

If we want that Oracle is the last program that is automatically started, and it is the first to be shutdown then we will name the startup and shutdown scripts on OS like /etc/rc3.d/S99oracle and /etc/rc0.d/K01oracle respectively.

The database script dbstart and dbora will be called from OS script /etc/rc3.d/S99oracle and /etc/rc0.d/K01oracle respectively.

Note that dbstart and dbshut take each SID, in turn, from the /etc/oratab file and startup or shutdown the database.

Automate Startup/Shutdown of Oracle Database on Linux

Step 01: Be sure that oratab file is correct and complete.

Check for oratab file either in /etc/oratab or in /var/opt/oracle/oratab.

Database entries in the oratab file have the following format:

$ORACLE_SID:$ORACLE_HOME:Y
Here Y indicates that the database can be started up and shutdown using dbstart/dbshut script.

If in my database there is two database named arju and arjudup then my oratab file will contain the entry like,
arju:/var/opt/oracle/product/10.2.0/db_1:Y
arjudup:/var/opt/oracle/product/10.2.0/db_1:Y
where /var/opt/oracle/product/10.2.0/db_1 is the $ORACLE_HOME of my database.

Step 02: Create a script to call dbstart and dbshut. In this example I will create one script that will do both startup and shutdown operation. I will name this script as dbora and will be placed in '/etc/init.d'.

a) Login as root.
b) Change directories to /etc/init.d
c) Create a file called dbora and chmod it to 750.

# touch dbora
# chmod 750 dbora
d)Edit the dbora file and make the contents of it like below.

[Code].....

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PL/SQL :: Virtual Column In 11g?

Aug 19, 2013

I m migrating from 10g to 11g.I have doubt on virtual column.whether function based index and virtual column are same? if no means what difference between then.What are difference in their performance??

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Connect To DB On Virtual Box Using Toad?

Sep 27, 2013

Im getting this error when trying to connect toad to my test database using virtualbox. This is my first time trying to do this on a Mac as well:

java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection

The settings in toad are correct as far as host, port #, and sid. My listener is up, and it is registered with the database. My tnsnames.ora file is correct. No firewall. I can ping my virtualbox from my local machine. I placed my tnsnames.ora file on my local machine, and tried to connect that way as well. I have no clue what else the Network adapter is looking for.

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Windows :: OEL Installation Using VM Virtual BOX On Win 8

Feb 5, 2013

I have a new laptop with windows 8 installed. I tried installing Oracle Virtual Box. But I am unable to install OEL on top of that. How to do installations on Windows 8. If so, what are the compatible versions of OEL and Virtual Box?

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SQL & PL/SQL :: ORA-01733 - Virtual Column Not Allowed Here

Nov 23, 2011

Does know why I am getting ORA-01733- virtual column not allowed here Following :

CREATE TABLE EMPL
(
EMP_ID NUMBER(10),
CNT NUMBER(10)
)
insert into empl(EMP_ID)
values(1)

[code]....

ORA-01733- virtual column not allowed here

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Clusterware :: Fail Safe Virtual IP?

Jul 3, 2012

I have a Windows 2008 R2 SP1 2 node active/passive cluster with fail safe 3.4.2 installed. I also have 11G database software installed. My problem is I am unable to successsfully add an oracle virtual IP to the oracle group within fail safe. I receive the below error when I try. I need to get this resolved so that I can add my databases to the cluster.

Oracle Fail Safe Manager

FS-10890: Oracle Services for MSCS failed during the create operation
FS-11220: Failed to create the virtual address
FS-10012: Failed to bring the cluster resource Network Name HHVHAVELP01 online. Check the Windows event log for messages.
FS-10726: Resource Network Name HHVHAVELP01 is in a failed state

I don't see any message in the event log when I check...

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Can Index Be Created On Virtual Column?

May 17, 2011

what my issue is with this virtual column

CREATE TABLE C0HARPA.VCOL_TAB
(
col1 VARCHAR2(30 BYTE),
v_col1 VARCHAR2(6) GENERATED ALWAYS AS (SUBSTR(col1,1,6)) VIRTUAL
)
TABLESPACE TOOLS

[code]...

Lastly, can an index be created on a virtual column? I am thinking no since it calculated?

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Security :: Virtual Private Database

Aug 25, 2012

I am having one table Where,different country names are stored. while viewing data, I have to make sure that if country name having "USA" can only view its data. How can i do at DB level without passing where clause. Is Virtual Database in this case?

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Production Oracle DB 11g On Virtual Server

Apr 25, 2013

We just got a new Dell R720 server that will host our Oracle DB. The server hasn't even been turned on yet but we know that the load on the server will be very low for a long time.

One of our problems is that we need to run a VERY important application. Since it is not very resource consuming compared to it's importance we chose to run it on a not so new Xeon 5110 1.60 GHz - 4GB RAM server. He said it's not a good idea and that we should buy a new server. (money is very low)

The software vendor suggested to virtualize our R720 server, host a vm running our database, and along with it other smaller machines like the one I described above. I suggested the use of Oracle VM, Oracle Linux for the database host and transforming the physical servers servers in VM with P2V.

Our IT Manager didn't like that, he said that it's not recommended to run a database on a virtual machine. But our software vendor said that many of their clients run their solution this way.

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