Multiple APEX instances sharing the same Oracle Home?

Can someone tell me if it is possible to have multiple APEX installations where the database instances are sharing the same Oracle Home? If so, how would this be set up?
So, if I have development and test running on the same home, I want a separate APEX instance for each. We can do this when different Oracle homes are used (separate httpd running) but not for the same home.
Thanks

Thanks - We have tried putting 2 dad entries in file, but not sure how you connect. You only specify a port number, so how does it connect that to a db???

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Can multiple APEX application use the same parsing schema?

Hi,
I have 4.2 APEX thru pl/sql Gatewat, 11gr2 DB and using theme 24.
Due to the APEX limitation for version control I would be splitting 1 big ERP applications into 24 different APEX applications and each application would be considered as 1 unit for version control.
I have about 800 tables and I would assume that all of these would need to be stored in 1 schema since a lot of these table are linked thru FK.
Can I have multiple APEX APPS using the same parsing schema? or is there a better way to do this?
Thanks in advance!

Hi,
Multiple applications can have same (one) parsing schema.
You can test that on e.g. apex.oracle.com, where normally you have only one schema and you create multiple applications and all use that same schema.
Regards,
Jari
My Blog: http://dbswh.webhop.net/htmldb/f?p=BLOG:HOME:0
Twitter: http://www.twitter.com/jariolai
Edited by: jarola on Jan 28, 2013 7:15 PM

Http server in the same oracle home or not ?

Hi, finally i could install oracle 10g 10.2.0.3 on windows vista. Now i want to install http server but i wonder if i have to install in the same oracle home or in another one. Some documents says yes another one not.

oracle_sv wrote:
I would like to keep 10g version. I have the cd companion. The fist time that i tried to install give some errors and after that i couldn´r start OracleDB console and EMOuch! I suspect that was due to installing HTTP Server binaries in your Oracle home?
I have only installed HTTP Server on Linux, and I had a separate home for the Oracle database binaries and HTTP Server.
The installation (at least on Linux) was straight forward, provided you have done your prep work by installing the correct RPM's, environment, etc.
Once you have HTTP Server installed, you have to fulfil the rest of the APEX requirements (if not already done), such as:
- Patch HTTP Server (for Linux, this is Application Server Patch 5983622)
- Install XML DB
- Install Oracle Text
- Upgrade PL/SQL Web toolkit
- Install APEX (I had 3.12 originally installed, but recently upgraded to 4.0 which was painless).
- Configure your Apache/modplsql/conf/dads.conf in your HTTP Server home
You will need to read the installation guides on how to do each of the above. You might have more luck doing this on Linux than Windows.
If I was in your position and starting from scratch on this, I would be installing 11g, as it might not be so much work since APEX comes as part of 11g.

Multiple Portal instances on the same machine

Hi Forum,
we have a requirement where in we are asked to implement multiple instances of Portal on the same machine. can you please give me some detials on Feasibility , issues and limitations of having multiple Portal instances on the same machine , different instances pointing to different tiers(Dev, Test, Production) etc
pointers will be highly appreciated..
regards,
uday

Hi Uday,
Please look at this.
Multiple Portal Instances - Virtual Hosting
Regards,
Siva
P.S: Award points if you find this useful.

Multiple LiveCache Instances Sharing the SAPDB software

Hello
We have two LiveCache Instances sharing the same set of executables for the SAPDB software and we are trying to apply a patch for DBMServer 7.5.0 Build 035 to get to Build 044 for SCM 4.1
I got the following error when I try to use SDBUPD
beginning to check sap db instances
existing instances:
0: LCT "/sapdb/LCT/db" 7.5.0.31
1: LCX "/sapdb/LCT/db" 7.5.0.31
2: none
please enter instance id: 1
no instance update supported - there are more than one instance based on instal"
SAP liveCache instance update exited abnormally at Fr, Aug 01, 2008 at 21:25:53
So I used SDBINST with APO LiveCache as the profile to install the software to /sapdb/LCT/db. Then I executed load_systab and load_lcapps using dbmcli for LCX. I would like to know if I am missing any of the steps. Please advise.
Thanks
Jay

Hi Jay,
sharing one dependent path for two liveCache instances is not supported - exactly due to the tight coupling of SCM and liveCache and the issues resulting from it when patching on of the two liveCaches.
To 'move' over the LCT to the newly installed dependent path you've to unregister the instance first (aka db_drop withoutfiles) and re-register it as a new instance.
Make sure you've a backup before you do this!
1. bring liveCache LCT offline
2. dbmcli -U c db_drop withoutfiles
3. dbmcli u2013s u2013R <new_dependent_path> db_create LCT control,<password>
4. bring liveCache LCT online again
After that the LCT liveCache runs in its own dependent path and you can upgrade the two instances separately.
Regard,
Lars

Multiple application instance on the same server instance

Can we have multiple instances of the same application on a single WLS?? For ex, can I have two app.ear files in different application directories??

Hi Nilesh,
Can you please clarify your landscape as this will help in getting answers to your question.
In general adding instances (and/or server nodes) should be considered for increasing capacity rather than impoving performance. Specifcially, adding instances (and/or server nodes on the same host you risk a situation where the processes compete for resources which will have a negative effect on performance. If you do need to combine instances on the same host, make sure there is enough hardware (specifically memory in case of JAVA).
Hope this helps,
Best regards, Walter

Multiple Node Manager Instances and servers sharing the same domain home.

Hi,
We have a 8 man server weblogic cluster spread over 4 machines. Each machine runs 2 man servers each.
Each of the machine is configured to run node manager.
We use shared storage accessible to all 8 servers and all 8 man servers have the same domain_home.
Lets call it W:/domain
Now the problem we are facing is that node manager running on 1 machine is trying to access/control a managed server on a different machine after a machine restart.
eg.
ManServer1 Home : W:/domain/servers/server1 ====> runs on Machine 1
ManServer2Home : W:/domain/servers/server2 ====> runs on Machine 2
Problem is node manager on machine 1 is trying to restart man server 2. The path W:/domain/servers/server2 is accessible to Machine 1.
After a restart, what I assume is happening is that the nodemanager is checking all servers folder under Domain_Home/Servers and trying to restart servers instead of restarting only those which it should start. The config file has the server and machine assignment done correctly. Is there a way to make this configuration towork. Or do we need to create different domain_home's for different man servers like
Domain_Home for MS1: W:/domain/MS1 ( Server Home would be : W:/domain/MS1/servers/MS1)
Domain_Home for MS2: W:/domain/MS2 ( Server Home would be : W:/domain/MS2/servers/MS2)
Regards,
Atheek
Edited by: atheek1 on 03-May-2010 00:27

Thanks - We have tried putting 2 dad entries in file, but not sure how you connect. You only specify a port number, so how does it connect that to a db???

SSO for multiple APEX applications on the same instance

Hi All,
We have an APEX instance with 2 applications configured in 2 workspaces.
The instance is already configured to use SSO. I have followed thee Metalink note #562807.1 to do the SSO wiring.
We are planning to incorporate SSO authentication for both the applications.
Also planning to use different URLs (2 aliases for the server) for the applications.
eg:-
App1 will be using http://app1.us.oracle.com/pls/apex/f?p=100:10
App2 will be using http://app2.us.oracle.com/pls/apex/f?p=200:10
Is it possible to register SSO on 2 URLs for the same instance?
Can I execute regapp.sql multiple times on the same instance?
Please advice me.
Thanks,
Sajeesh

Is it possible to register SSO on 2 URLs for the same instance?You should be able to register as many partner applications as you like. I suggest that you try it.
Can I execute regapp.sql multiple times on the same instance?Yes, but the lsnr_token value must be unique. That's HTML_DB:hostname:port.
Your applications in different workspaces will not be able to share sessions but you will probably get the single-sign-on behavior you need.
Scott

IHAT multiple iAS instances in the same view.

I have three iAS instances installed on the same node, the iHAT is also installed and running from the same node.
iHAT Version: 10.1.3
APPSERVERS:
- INFRA - ORACLE_HOME01
- MIDTIER#1 - Forms / Report - ORACLE_HOME02
- MIDTIER#2 - Discoverer - ORACLE_HOME03
I installed iHAT and started the JAVA server, (3 sessions on different ports. 8096, 8097 and 8098)
Everything works well and i can monitor the application servers on the different ports from the web browser.
Then over to my question, is it possible to monitor all three IAS servers from only one running iHAT view? And if so, how is this possible.
Best regards,
Roberth Steiner

Yes.. I need to use different port and I could resolve by following steps
There is a way in Oracle Application Server to achieve this. However, it requires a different installation type and additional configuration, Following are the steps that you need to take.
a) Install Oracle Application Server with J2EE Server only option, this is in Advanced Installation, also, please select the option: Configure this as an Administration OC4J Instance.
b) Access Oracle Application Server control console
c) Create the OC4J instances, by default, it has a home instance, then you need create additional instances: say example placeagra, placeexcalibur.
d) Stop Oracle Application Server.
e) Edit [oracle-appserver-root]/opmn/conf/opmn.xml
Replace OC4J instance placeagra's port definition for default-web-site
from <port id="default-web-site" range="12501-12600" protocol="ajp"/> to <port id="default-web-site" range="8889" protocol="http"/>
Replace OC4J instance placeexcalibur's port definition for default-web-site
from <port id="default-web-site" range="12501-12600" protocol="ajp"/> to <port id="default-web-site" range="8890" protocol="http"/>
f) Start Oracle Application Server
g) Install your applications into these instances through application control console. (You can only use home's ascontrol)
* This should work fine. If you go to [oracle-appserver-root]/opmn/bin directory, type "opmnctl status -l", you will see that you have multiple HTTP server services running, each with different port.
* This is identical to Weblogic's set up, however, this is not recommended for production, since the embedded HTTP server in Oracle Application J2EE server is only for application management, just as weblogic.
* You can only access application console through home's http server, since ascontrol application for other instances are always in down mode.

Multiple Tomcat instances on the same server

Can we have multiple tomcat instances load balanced on the same physical box without VM. Has there been any such implementations. How can CMS be distributed across. What can the know architecture for the same.
Regards
Vijsy

This can be done, but it really depends on the load balancer you use.
There is no recommendation from BusinessObjects and you might want to consult the load balancer vendor for instructions and support.
Regards
Caroline

Multiple web-app sharing the same database.

hi experts,
If I have several websites running on the same server. Most of the are sub-domains of the same domain, they share the same database, but each sub-domain will have their own web-apps(This also means that they are running on a different java virtual machine, right? ). My question is that how can I make them communicate with each other. Also, will there be any conflict with the database insert/update issues, and How do I solve that?
For example, if one user is already logon from "tips.mydomain.com", then when the users goes to another sub-domain, say "java.mydomain.com", he/she doesn't need to re-login again.
thanks.

Well yes, having databases accessed by multiple users simultaneously is an issue that many many developers have had to face. But the answer to "How do I solve that" doesn't fit in this little box or in the limited time that people have available to answer questions here. It's an extremely complex issue about which entire books have been written.
As to the bit about the subdomains, it is possible to map them to the same web server, as far as I know, but that's a web configuration issue and nothing to do with Java programming.

Multiple environment instances in the same process with DB_REGISTER flag

Hello,
I'm having two applications in the tomcat that should use the same environment. I have the DB_REGISTER flag set, and since tomcat has a java single process for all applications, I can't open an environment in the second application since I get a "DB_REGISTER limits processes to one open DB_ENV handle per environment" error message. This is understandable. So my question is: is there a way to "join" the first opened environment instance. Or do I have to run applications in two different processes, i.e. using 2 tomcat instances?
Thanks,
Vyacheslav

Thanks for reply Sandra.
I have a follow-up question. Is it possible to get an environment instance if it's already opened in the process. For instance like:
Application1 in the tomcat process:
Environment env = new Environment(envHome, envConfig) //openning an env under "envHome" directoryApplication2 in the same tomcat process:
Environment env;
try{
env = new Environment(envHome, envConfig) //openning an env under "envHome" directory
} catch (DbException e) {
if(isAlreadyOpenedException(e)) { //checking that our exception is "DB_REGISTER flag permits only 1 opened env handle per process"
env = Enviroment.getEnvironmentHandleFromTheSameProcess(); //here I'm improvising. Is there any similar method?
} So my question is if it's something that is possible.
Thanks in advance,
Vyacheslav

Deploying multiple central sites sharing the same edge, persistent chat and monitoring services

Hi,
We've already one central site and multible branches that have SBS installed ,we're planning to replace these SBSs with standard edition servers to reduce the dependencies on the FE and BW that are located in the central site but that all will share the
same Edge ,Persistent chat and Monitoring roles located in the Main site.
What points we should take care of while making these changes regarding the following:
1- Reverse Proxy
2- DNS records
3- Edge configuration and communication with the branch sites
4- Persistent Chat communication with the branch sites
5- Monitoring services which is coallocated on the main FE
6- Users sign in internally and externally and how they will be directed to use their server for meet and dialin

1- Reverse Proxy
publish the webservices for all additional standard Server (Change certificate with additional SAN!)
2- DNS records
The registrar on the branch side should point to the Standard server
3- Edge configuration and communication with the branch sites
can still be used with the standard server
4- Persistent Chat communication with the branch sites
can still be used with the standard server
5- Monitoring services which is coallocated on the main FE
the same for the standrad Server, only configuration
6- Users sign in internally and externally and how they will be directed to use their server for meet and dialin
therefore you have to publish the webservices through your reverse Proxy and to Change the DNS entries for your local sites.
regards Holger Technical Specialist UC

Multiple DMVPN instance on the same router one public interface

I know it possible to run multiple instances DMVPN on a router with one public interface.
Question:
If I take one of my site and put it on a different tunnel from all other remote sites will it be able communication to the other site directly? I am running EIGP through the gre Tunnel
example of the hub site:
interface Tunnel100
bandwidth 100000
ip address 192.168.105.254 255.255.255.0
no ip redirects
ip mtu 1400
ip hello-interval eigrp 1 1
ip hold-time eigrp 1 3
no ip next-hop-self eigrp 1
ip nhrp authentication L3GR@RD
ip nhrp map multicast dynamic
ip nhrp map group WAR-881-VPN1 service-policy output SHAPE->20M
ip nhrp map group PLA-2811-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group LIV-2811-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group BRM-2811-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group ELP-2811-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group RAN-2811-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group LAB-2911-VPN1 service-policy output SHAPE->T1(MLPPPx2)
ip nhrp map group ORE-2811-VPN1 service-policy output SHAPE->5M
ip nhrp map group VAU-2811-VPN1 service-policy output SHAPE->10M
ip nhrp map group CAVAURTVP001 service-policy output SHAPE->10M
ip nhrp network-id 100
ip nhrp holdtime 600
ip nhrp max-send 1000 every 10
ip nhrp redirect
ip tcp adjust-mss 1360
no ip split-horizon eigrp 1
ip summary-address eigrp 1 10.87.0.0 255.255.0.0
load-interval 30
delay 100
tunnel source GigabitEthernet0/0
tunnel mode gre multipoint
tunnel key 100
tunnel vrf PUBLIC
tunnel protection ipsec profile IPSEC-DMVPN
interface Tunnel300
bandwidth 100000
ip address 192.168.106.254 255.255.255.0
no ip redirects
ip mtu 1400
ip hello-interval eigrp 1 15
ip hold-time eigrp 1 45
no ip next-hop-self eigrp 1
ip nhrp authentication L3GR@RB
ip nhrp map multicast dynamic
ip nhrp map group CAVAURTVP001 service-policy output SHAPE->10M
ip nhrp network-id 100
ip nhrp holdtime 600
ip nhrp max-send 1000 every 10
ip nhrp redirect
ip tcp adjust-mss 1360
no ip split-horizon eigrp 1
ip summary-address eigrp 1 10.87.0.0 255.255.0.0
load-interval 30
delay 100
tunnel source GigabitEthernet0/0
tunnel mode gre multipoint
tunnel key 100
tunnel vrf PUBLIC
tunnel protection ipsec profile IPSEC-DMVPN
Thanks the help in advance,
Nigel

Hello Mr Manhurt,
I can help you. But first what is EIGP?

Multiple VM's sharing the same vcpu's?

Hey all, i'm new to Oracle VM... We have been using it for a little bit but I haven't been able to dive into its low level workings.
I have a number of VM's on a server and most have between 2 and 4 vcpu's assigned. What I notice is that they all appear to be using the first four vcpu's based on xentop output. For example, two vm's listed below but all 8 VM's are like it.
VM1 b- 10908765 1.5 5242880 6.9 5242880 6.9 2 2 2353737 232062 2 1455 721019 127197360 0
VCPUs(sec): 0: 5426603s 1: 5482161s
VM2 b- 1627508 2.4 8192000 10.9 8192000 10.9 2 1 2319535 1919810 2 389 215323 34384929 0
VCPUs(sec): 0: 820384s 1: 807124s
Now this server has 16 vcpus available... From what I have read in a few other posts, VM Server should be spreading this load out to other cpu's. But that doesn't appear to be happening.
I've seen mention of people binding VM's to specific VCPU's. Should I be doing that? I didn't think it was necessary.

Hi,
this does onyl show the VCPUs number from the guest, not the CPU this guest is mapped to.
Use
xm vcpu-list
to see the CPU a VCPU is mapped to.
Regards
Sebastian

Multiple APEX instances sharing the same Oracle Home?

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