Using native APEX on 11gR2 RAC

Hi all,
I'm not sure if this is the right forum for this question, please forgive me if it isn't.
When using native APEX on 11gR2 RAC, is it possible to balance connections between instances ? If yes, how ?
I've successfully installed 11gR2 RAC, and configured APEX, and I'm able to use it, but it runs on one instance only.
Thanks in advance
Antoine

Hi Antoine,
How are you connecting to the database, via the Apache HTTP Server mod/plsql connector or are you using the embedded PL/SQL gateway (EPG)?? In the first case connecting to the SCAN listener should balance the connections between the instances if they are both registered for the service you connect to. I'm not sure how the EPG works under RAC. In general, I'd prefer the application to only connect to one of the RAC instances by default and only transfer across due to failover.
Rob..

Similar Messages

Need 11gr2 RAC install Guide on Solaris 10 x86 using containers and NFS

I'm looking for an 11gr2 RAC install Guide on Solaris 10 x86 using 2-3 containers. I need to have the NFS server reside in the global zone or on a 3rd container visable to the two rac containers.
Please share me installation guide!
Thank you!
PS - I currently have run into an install issue -
Can't change ownership on /oracle/products/11.2.0/ocr/: not owner at /oracle/app/11.2.0/grid/crs/install/crsconfig_lib.pm line 5014.
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Have you visited Oracle Support Services website (formerly metalink) to determine if your desired configuration is supported?
Last time I looked it was not.
That said Oracle database installation guides are fully documented online.
http://www.oracle.com/technetwork/database/enterprise-edition/documentation/database-093888.html

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Can i get any step by step document to install 11gr2 rac on solaris 10.
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thanks in advance

Hi,
Can i get any step by step document to install 11gr2 rac on solaris 10.
My database is two node rac. I am using ASM as storage. So i need a document which should very easy to understand.Refer below link:
http://www.oraclemasters.in/?p=961
Configure storage as per your requirement.
thanks,
X A H E E R

Using Oracle 11gR1 OID to control access to 11gR2 RAC database ?

I have a two 11gR2 RAC Node database that I would like to implement Oracle 11gR1 OID to manage all access to the RAC database.
Should I install and configure Oracle 11gR1 OID into the same RAC database to control access to the RAC database? Is this the appropriate approach?
Please share your ideas... I couldn't make it to Openword to ask this type of question.

Hi,
I think there is some confusion here. OID doesnt protect your database. All OID is doing is taking the authentication of the user and authorization (privileges) of the user to OID and out of the database. This way you can centralize the management of all user accounts in one place and not worry about it in the database. This is helpful only if you have many databases. If you have a very small number of databases and small number of user accounts, then OID is not really buying you anything. The best practices is published in the oracle docs. Just that you have to read a lot to figure it all out. Here are some info from our installation.
1. weblogic and oid application is installed on a application server
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3. Replication (OID application replication) setup between a primary oid server and a secondary oid server in the DR site
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For protecting you data, you will need to use additional security methods/products like :
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Regards,
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11gR2 dataguard using a primary 2 node RAC and a single standby

Hi,
I need to implement dataguard between 11gR2 RAC db to a single standby. How do I proceed?
Secondly, I need to timely apply the archive log i.e I need the dataguard to be in SYNC mode only in the night and the standby in read only
mode rest of the times. Can I achieve this using dataguard broker? If yes, can you please provide me the steps?
regards,
Ram

Doing that would require jobs again.
In your example:
9 am:
alter database recover managed standby database cancel;
-- here you can actually specify anything greater 780 because of the cancel at 10 pm; this is just to make sure the archive logs are being shipped.
alter database recover managed standby database delay=780 disconnect from session;
-- and, if your requriement is still to have the standby open read only
alter database open read only;
10 pm:
shutdown immediate;
startup nomount;
alter database mount standby database;
alter database recover managed standby database cancel;
alter database recover managed standby database using current logfile disconnect from session;
with that setup:
- your standby stops recovering at 9am
- the archive logs of the primary will still be shipped to your standby side for any emergency
- you'll have an open read only standby from 9am to 10pm
- the archive logs will be real time applied from 10pm to 9am
Note that this is just theory at the moment, I don't have a test set up like this. But it should give you an idea of what's possible and in what way you can accomplish your needs.

Oracle 11gR2 RAC in LDOM Network issue

Hi, Requesting your expert advise regarding this configuration.
We are implementing LDOM 2.2 on two SPARC T4-4 for Oracle 11gR2 RAC; Solaris 10 U10 on both control and guest domain. The setup for each primary/control domain is: Two 10g links aggregated and have four VLAN trunked on the aggregate. vSwitch created using the aggr as the device as following per T4-4:
NOTE: VLAN 1501 is for data connection and VLAN 10 is for heartbeat for one RAC cluster and VL 1601 and 11 is for another RAC. all together four LDOMS.
ldm add-vswitch vid=1501,1601,10,11 net-dev=aggr1 primary-vsw0 primary
ldm add-vnet pvid=1501 vnetprod primary-vsw0 guest1
ldm add-vnet pvid=10 vnethb primary-vsw0 guest1
ldm add-vnet pvid=1601 vnetprod primary-vsw0 guest2
ldm add-vnet pvid=11 vnethb primary-vsw0 guest2
vnet inside the LDOM are not tagged:
vnet1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 10.220.128.20 netmask ffffff80 broadcast 10.220.128.127
ether 0:14:4f:f9:ec:7f
vnet2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 192.168.2.11 netmask ffffff80 broadcast 192.168.2.127
ether 0:14:4f:fb:2b:8f
Here is the whole configuration:
root@gp-cpu-suh004 # ldm -V
Logical Domains Manager (v 2.2.0.0)
Hypervisor control protocol v 1.9
Using Hypervisor MD v 1.4
System PROM:
Hostconfig v. 1.2.0. @(#)Hostconfig 1.2.0.a 2012/05/11 07:34
Hypervisor v. 1.11.0. @(#)Hypervisor 1.11.0.a 2012/05/11 05:28
OpenBoot v. 4.34.0 @(#)OpenBoot 4.34.0 2012/04/30 14:26
root@gp-cpu-suh004 # ldm ls
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- UART 32 16G 2.5% 48m
oidrac1 active -n---- 5000 32 16G 0.0% 27m
root@gp-cpu-suh004 # ldm ls -l
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- UART 32 16G 3.1% 48m
SOFTSTATE
Solaris running
UUID
e73421fe-7003-e748-be7e-801fee5bfcc7
MAC
00:21:28:f1:95:26
HOSTID
0x85f19526
CONTROL
failure-policy=ignore
extended-mapin-space=off
cpu-arch=native
DEPENDENCY
master=
CORE
VCPU
MEMORY
RA PA SIZE
0x20000000 0x20000000 16G
CONSTRAINT
threading=max-throughput
VARIABLES
auto-boot-on-error?=true
auto-boot?=true
boot-device=/pci@400/pci@1/pci@0/pci@0/LSI,sas@0/disk@w5000cca0251e7a29,0:a
keyboard-layout=US-English
nvramrc=." ChassisSerialNumber 1207BDYFFE " cr
use-nvramrc?=true
IO
DEVICE PSEUDONYM OPTIONS
VCC
NAME PORT-RANGE
primary-vcc0 5000-5100
VSW
NAME MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
primary-vsw-mgmt 00:14:4f:fb:75:c0 igb1 0 switch@0 1 1 1500 on
primary-vsw0 00:14:4f:fa:33:8b aggr1 1 switch@1 1 1 1501,1601,10,11 1500 on
VDS
NAME VOLUME OPTIONS MPGROUP DEVICE
primary-vds0 rootoid /dev/dsk/c14t50060E8005BFAA04d1s2
data_oid /dev/dsk/c14t50060E8005BFAA04d2s2
ocr_oid /dev/dsk/c14t50060E8005BFAA04d3s2
VCONS
NAME SERVICE PORT
UART
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
oidrac1 active -n---- 5000 32 16G 0.0% 27m
SOFTSTATE
Solaris running
UUID
0fcbbf21-14a2-eb21-f544-d4424212f3ef
MAC
00:14:4f:f9:1b:d4
HOSTID
0x84f91bd4
CONTROL
failure-policy=ignore
extended-mapin-space=off
cpu-arch=native
DEPENDENCY
master=
CORE
CID CPUSET
VCPU
VID PID CID UTIL STRAND
MEMORY
RA PA SIZE
0x20000000 0x420000000 16G
CONSTRAINT
threading=max-throughput
VARIABLES
auto-boot?=true
boot-device=disk:a
keyboard-layout=US-English
NETWORK
NAME SERVICE ID DEVICE MAC MODE PVID VID MTU LINKPROP
vnet1 primary-vsw-mgmt@primary 0 network@0 00:14:4f:fa:61:77 1 1500
vnetprod primary-vsw0@primary 1 network@1 00:14:4f:f9:ec:7f 1501 1500
vnethb primary-vsw0@primary 2 network@2 00:14:4f:fb:2b:8f 10 1500
DISK
NAME VOLUME TOUT ID DEVICE SERVER MPGROUP
oneidrootdisk rootoid@primary-vds0 0 disk@0 primary
oid_data data_oid@primary-vds0 1 disk@1 primary
oid_ocr ocr_oid@primary-vds0 2 disk@2 primary
VCONS
NAME SERVICE PORT
oidrac1 primary-vcc0@primary 5000
root@gp-cpu-suh004 # ldm ls-services
VCC
NAME LDOM PORT-RANGE
primary-vcc0 primary 5000-5100
VSW
NAME LDOM MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
primary-vsw-mgmt primary 00:14:4f:fb:75:c0 igb1 0 switch@0 1 1 1500 on
primary-vsw0 primary 00:14:4f:fa:33:8b aggr1 1 switch@1 1 1 1501,1601,10,11 1500 on
VDS
NAME LDOM VOLUME OPTIONS MPGROUP DEVICE
primary-vds0 primary rootoid /dev/dsk/c14t50060E8005BFAA04d1s2
data_oid /dev/dsk/c14t50060E8005BFAA04d2s2
ocr_oid /dev/dsk/c14t50060E8005BFAA04d3s2
root@gp-cpu-suh004 # dladm show-link
vsw0 type: non-vlan mtu: 1500 device: vsw0
vsw1 type: non-vlan mtu: 1500 device: vsw1
vsw1501001 type: vlan 1501 mtu: 1500 device: vsw1
igb0 type: non-vlan mtu: 1500 device: igb0
igb1 type: non-vlan mtu: 1500 device: igb1
qlge0 type: non-vlan mtu: 1500 device: qlge0
qlge1 type: non-vlan mtu: 1500 device: qlge1
qlge2 type: non-vlan mtu: 1500 device: qlge2
qlge3 type: non-vlan mtu: 1500 device: qlge3
aggr1 type: non-vlan mtu: 1500 aggregation: key 1
root@gp-cpu-suh004 # ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
igb0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 10.223.12.14 netmask ffffff00 broadcast 10.223.12.255
ether 0:21:28:f1:95:26
vsw1501001: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 3
inet 10.220.128.9 netmask ffffff80 broadcast 10.220.128.127
ether 0:14:4f:fa:33:8b
root@gp-cpu-suh004 # netstat -nr
Routing Table: IPv4
Destination Gateway Flags Ref Use Interface
default 10.220.128.1 UG 1 7
10.220.128.0 10.220.128.9 U 1 5 vsw1501001
10.223.0.0 10.223.12.1 UG 1 2
10.223.12.0 10.223.12.14 U 1 1 igb0
224.0.0.0 10.220.128.9 U 1 0 vsw1501001
127.0.0.1 127.0.0.1 UH 8 261 lo0

Yes, I can connect to the vswitch interface on the control domain. I didn't specify any PVID because my understanding is that PVID will tag any frame with the PVID VLAN by default. basically the PVID for this interface is 1.
Here's the VNET config for the other LDOM in the RAC cluster:
VSW
NAME MAC NET-DEV ID DEVICE LINKPROP DEFAULT-VLAN-ID PVID VID MTU MODE INTER-VNET-LINK
primary-vsw-mgmt 00:14:4f:f9:91:fa igb1 0 switch@0 1 1 1500 on
primary-vsw0 00:14:4f:fa:8e:cf aggr1 1 switch@1 1 1 1501,1601,10,11 1500 on
NETWORK
NAME SERVICE ID DEVICE MAC MODE PVID VID MTU LINKPROP
vnet1 primary-vsw-mgmt 0 00:14:4f:fb:65:6d 1
vnetprod primary-vsw0 1 00:14:4f:fa:2b:02 1501
vnethb primary-vsw0 2 00:14:4f:f8:12:c1 10
Thanks for reviewing my configuration.

Using Native Oracle XML DB Web Services - REST POST web service possible?

My goal is to expose some pl/sql procedures as a REST web services.
The Database is 11gR2
The request method needs to be a POST (not GET as a request will perform insert/updates ) - the request body will contain a xml structure
Have setup XMLDB Database-native Web Services as per
11g documentation "Using Native Oracle XML DB Web Services"
It seems this setup support only SOAP requests!?
RESTful webservice with GET is (sort of) supported using
Embedded PL/SQL Gateway as describer here:
http://ora-00001.blogspot.com/2009/07/creating-rest-web-service-with-plsql.html
Although no support for POST
Obviously the post is from 2009 so just want to know if anything changed since.
Has anyone found a way to expose pl/sql procedures using XML DB or other approach as a REST POST web services?
(As the relative low number of calls/hour and also the aim to have the least amount of moving parts therefor looking for a DB centric solution)
Thanks
Pete

I think the post referred to was more an exercise of what could be achieved. The quickest way, nowadays, to get this done with not too much hassle is via APEX
http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35128/restful_svc.htm
M.

How to migrate data from oracle 9i database to new machine 11gr2 RAC ASM

Hi Expert
I need your expertise to advise me what is the best method to move data from oracle 9i database to new machine running oracle 11r2 RAC database with ASM.
Currently my production server running on HPUX ORACLE 9I database with normal file system. My new server is running SUN SOLARIS SPACR 64 bit ORACLE 11gr2 RAC with ASM. What is best method to move data over so it will be consistent. Any guide can refer.
Regard
William

Hi William,
See the note in metalink Migration of Oracle Database Instances Across OS Platforms [ID 733205.1] to saw the Endian Format of your OS. If is the same you can use the RMAN to convert the database to another OS, if not the only option is using export/import (Transportable Tablespaces).
To upgrade from 9i to 11g, see the note 837570.1 - Complete Checklist for Manual Upgrades to 11gR2.
To migrate your FS to ASM the only way is using RMAN, so see the note - How to move a datafile from a file system to ASM [ID 390274.1].
Hope this help you.
Best Regards,
Ruben Morais

Problem of Copying the Original VM to 2nd VM in Oracle 11gR2 RAC system

Folks,
Hello. I have been installing Oracle Database 11gR2 RAC system using 2 nodes that are 2 Virtual Machines (rac1 and rac2) on the top of VMPLayer 3.
I follow the tutorial http://appsdbaworkshop.blogspot.com/2011/10/11gr2-rac-on-linux-56-using-vmware.html to do.
The original Virtual Machine rac1 has run correctly. I configure rac1 network (eth0 and eth1) by opening VM rac1 and using command "[root@rac1\] #neat" as root user to invoke the network configuration.
For the second Virtual Machine rac2, I simply copy all files in "C:\VM\rac1" into "C:\VM\rac2". Then I have done the following:
1) In the directory "C:\VM\rac2", rename "rac1.vmx" to "rac2.vmx".
2) Change display name from "rac1" to "rac2" in the file "rac2.vmx".
The next thing to do for rac2 is to open the Virtual Machine rac2 and configure its network (eth0 and eth1) by using the command "[root@rac2\]#neat" as root user.
But by this step, I don't understand how to open the Virtual Machine rac2 so that can configure its network (eth0 and eth1).
Can any folk tell me how to open the VM rac2 to configure its network by this step ?
Thanks.

Folks,
Hello. Thanks a lot for replying.
The public IP for eth0 and private IP for eth1 in the file "/etc/hosts" are as follows:
rac1 eth0 192.168.138.35 eth1 192.168.137.35
rac2 eth0 192.168.138.36 eth1 192.168.137.36
In rac1, I have added 2 entries in /etc/hosts as following:
#VIP for eth0
192.168.138.130 rac1-vip.localdomain rac1-genetic-vip
192.168.138.131 rac2-vip.localdomain rac2-cellar-vip
Then I execute the command: [root@rac1 /]# ping rac2
Output:
PING rac2.localdomain (192.168.138.36) 56(84) bytes of data
From rac1.localdomain (192.168.138.35) icmp_seq=1
Destination Host Unreachable
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"E45: readonly option is set (add ! to override)".
My questions are:
First, do I need to add VIP in the file "/etc/hosts" for both rac1 and rac2 ?
Second, why rac1 still cannot reach rac2 after add VIP in /etc/hosts for rac1 ?
Third, why the file "/etc/hosts" in rac2 is read-only ? How to change it to be editable ?
Thanks.

Got minus one from a read call error in ORACLE 11gr2 RAC

dear all,
im facing typical issue in my newly built RAC enviornment (11GR2 on linux 64-bit).
its a typical 2-node RAC setup. whenever application server trying to establish connection , im facing below error.
Got minus one from a read call error.
due to this , we are unable to proceed.
please share your knowlegable thoughts about this issue. i have faced this issue several times in STANDALONE systems and i have rectified it.
but in 11gr2 RAC setup i have no clue on how to resolve.
Thank you all once again

842949 wrote:
dear all,
im facing typical issue in my newly built RAC enviornment (11GR2 on linux 64-bit).
its a typical 2-node RAC setup. whenever application server trying to establish connection , im facing below error.
Got minus one from a read call error.
due to this , we are unable to proceed.
please share your knowlegable thoughts about this issue. i have faced this issue several times in STANDALONE systems and i have rectified it.
but in 11gr2 RAC setup i have no clue on how to resolve.
Thank you all once againI am sorry to see that COPY & PASTE are broken for you.
It is really, Really, REALLY difficult to fix a problem that can not be seen.
use COPY & PASTE so we can see what you do & how Oracle responds.
Handle:      842949
Status Level:      Newbie
Registered:      Mar 9, 2011
Total Posts:      7
Total Questions:      4 (4 unresolved)
so many questions & without ANY answers.
http://forums.oracle.com/forums/ann.jspa?annID=718
Edited by: sb92075 on Jun 22, 2011 9:45 PM

TAF with FAN in oracle 11gr2 RAC

dear all,
our enviornment is 11GR2 RAC with 2 ndoe RAC. it has four different applications accessing the database.
so for each application i have created services as A,B,C,D.
services in NODE1- Prefered service in NODE2 -Prefered
A B
C D
services in NODE1- available service in NODE2 -Available
B A
D C
now i have the services as described above.
each services are created with
srvctl add service -d DB -s A -r NODE1 -a NODE2 –P BASIC –y AUTOMATIC
srvctl modify service -d DB -s A -q TRUE -P BASIC -e SELECT -z 180 -w 5 -j LONG
srvctl start service -d DB -s A
now i have enable server-side TAF with FAN. so do i need to provide the TNS entries to application layer namely oracle client
as below
AP =
(DESCRIPTION =
(ADDRESS=(PROTOCOL=TCP)(HOST=cluster01-scan)(PORT=1521))
(LOAD_BALANCE = YES)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = TEST)
(FAILOVER_MODE =
(TYPE = SELECT)(METHOD = BASIC)(RETRIES = 180)(DELAY = 5))))
or
do i need to add the above TNS entries in serverside tnsnames.ora file?
1) the connection from jdbc thin or session established via JDBC thin is not having the TAF details in v$session view.
SELECT machine, failover_method, failover_type,
failed_over, service_name, COUNT(*)
FROM v$session
GROUP BY machine, failover_method, failover_type,
failed_over, service_name;
if i execute the above query i couldnt find any session is having failover_method as BASIC and FAILOVER_TYPE as select.
all my application tier is using JDBC thin to access the database.
if i use oracle client from application server to access the database i could see my session having FAILOVER_METHOD as BASIC and FAILOVER_TYPE as SELECT.
so please provide me any realtime example for accessing database using JDBC thin with TAF and FAN properties for their sessions.

Hi,
1.) No if you define a service with TAF, then the TAF information will be provided to the client, without having to specify it again in the TNSNAMES.ora (neither client nor server).
However it does not hurt, if you have specified it additionally (it just makes it more difficult if you want to change something, because the client side does not get updated).
See this whitepaper for more information:
http://www.oracle.com/technetwork/database/clustering/overview/awm11gr2-130711.pdf
2.) However it seems you have forgotten to specify something with the service (you seem to be missing -m):
srvctl add service -h
Adds a service configuration to the Oracle Clusterware.
-P {NONE | BASIC | PRECONNECT} TAF policy specification
-e <Failover type> Failover type (NONE, SESSION, or SELECT)
-m <Failover method> Failover method (NONE or BASIC)
-w <integer> Failover delay
-z <integer> Failover retries
Regards
Sebastian

SCAN Name issue in Oracle 11gR2 RAC Installation

Hi,
I am trying to install Oracle 11gR2 RAC on VM ware and I got the INS-40922 (Invalid SCAN name). Do I need to create the SCAN name prior to the installation?
I have public,private, and VIP's. I am not sure how I create this SCAN Name. Please share your thoughts
Thanks

During installation of grid infrastructure SCAN will be automatically created. If you are using DNS then put the scan name and scan ip addresses entries in DNS . If you are not using dns/gns then put scanname and scan ipadress hosts file on each node in the cluster. Before installation, you should not be able to ping scan ipadresses.

Oracle 11gr2 RAC

hi,
can i setup 2 node oracle RAC using vmware server in a single laptop..?
cpu-intel i3 memory 4GB.
thanks in advance,
Sarathi

Hi Sarathi,
you're posting in the wrong forum ( APEX and not RAC/database ).
To answer your question, it should be possible, on http://www.oracle-base.com/articles/11g/articles-11g.php you can find a lot of examples/cookbooks setting this up ( RAC/VM ).
My experience is that a laptop with 4Gb will performe poorly and/or crash due to memory problems. You might consider setting up a 1 node RAC database which saves you 1 VM on memory.
Regards
Bas

Oracle 11gR2 RAC - R language integration

Hello,
We want statistical language R integration with oracle database. Does this come with default installation of oracle database Oracle 11gR2 RAC ?
OR it requires EXADATA - BIGDATA (oracle appliance)?
Kindly let us know steps for installation /enabling R language ? Basically we are looking for 3 options (transparency, In-database, embedded). Optimal option choice is done automatically depending on R language script (I think R script needs to have different calls?)
Thanks

Please do NOT duplicate your questions here.
R is a language. Oracle is a database. You store data in a database. You write programs [using a language such as R] to extract and manipulate data from the database.

Oracle 11gR2 RAC VM and SCAN and DNS and /etc/hosts (two) setup questions

Hi,
I am looking forward to setting up two Oracle 11gR2 RAC instances
on my Oracle VM test machine.
I plan on using the Oracle 11gR2 RAC VM template.
I want the final Oracle 11gR2 RAC instances to have SCAN that uses DNS.
The DNS will be pre-installed in the JeOS.
My first simple question about the setup is the following.
In my DNS name file, for example,
/var/named/chroot/var/named/milkyway.univ.db
do I need to provide the racnode1 and racnode2 information,
for example,
# DNS name file (snippet)
myjeos IN A 192.168.1.150
racnode1 IN A 192.168.1.161
racnode1-vip IN A 192.168.1.163
racnode2 IN A 192.168.1.162
racnode2-vip IN A 192.168.1.164
rac-scan IN A 192.168.1.131
rac-scan IN A 192.168.1.132
rac-scan IN A 192.168.1.133
Or, can I just provide only the rac-scan information
# DNS name file alternate (snippet)
myjeos IN A 192.168.1.150
rac-scan IN A 192.168.1.131
rac-scan IN A 192.168.1.132
rac-scan IN A 192.168.1.133
What I am getting at is the following.
Within the install process, will racnode1, racnode1-vip, racnode2,
and racnode2-vip host names and their IP address be written
to the RAC instances /etc/hosts files? (So I should not bother
to put them in the DNS name file like '# DNS name file alternate (snippet)'?)
Or, should I put the racnode and racnode-vip host names and IP addresses
in the DNS name file like '# DNS name file (snippet)'?
The second question is the following.
Are the cluster name and the scan name allowed to be different?
Currently, I would plan them to be different,
for example, rac-cluster and rac-scan.
Or, are they required to be the same,
for example, rac-cluster and rac-cluster.
Thank you.
AIM

AIM wrote:
do I need to provide the racnode1 and racnode2 information,
Or, can I just provide only the rac-scan information You need to provide all of it in DNS, because other hosts in your network will need to be able to resolve all of the normal, VIP and SCAN addresses for your RAC nodes. We write this data out to /etc/hosts just to reduce the amount of round-trip DNS requests the cluster nodes make for themselves.
Are the cluster name and the scan name allowed to be different?They can be different.

Using native APEX on 11gR2 RAC

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