Monday, September 29, 2014

ORA-00000: normal, successful completion

This error may occur in many circumstances you need to check environment variables:
$ORACLE_HOME
$ORACLE_BASE
$ORACLE_SID
also check /etc/hosts file it must contains correct hostname and ip.
example:

[oracle@oel6 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Mon Jan 27 11:55:17 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to an idle instance.
SQL> startup;
ORA-00000: normal, successful completion
after that i checked environment variables:
[oracle@oel6 ~]$ echo $ORACLE_BASE
/u0/app/oracle
[oracle@oel6 ~]$ echo $ORACLE_HOME
/u0/app/oracle/product/11.2.0/dbhome_1
[oracle@oel6 ~]$ echo $ORACLE_SID
orcl
it’s correct, then checked /etc/host file
cat /etc/hosts
#10.10.1.176 oel6
bingo! someone maybe system administrator or other dba commented this machine hostname and ip, hence we can’t start database, uncomment it and everything goes correct.
vi /etc/hosts
10.10.1.176 oel6

sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on Mon Jan 27 12:03:10 2014

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup;
ORACLE instance started.

Total System Global Area  835104768 bytes
Fixed Size                  2232960 bytes
Variable Size             645926272 bytes
Database Buffers          180355072 bytes
Redo Buffers                6590464 bytes
Database mounted.
Database opened.
 

Friday, September 5, 2014

GParted - Increase disk size of a Linux native partition


Prerequisites:
You will need to download the GParted live CD ISO file so that you can use it later, you can get this here.
Below is an image displaying disk information on the server before we begin.
disk free and fdisk
It is important to identify that you are actually using a Linux native partition – as this is what we are extending. As you can see in the above image /dev/sda1 is listed as “Linux” and it has the ID of 83. The 83 hex code shows that it is a Linux native partition, while 8e shows a Linux LVM.
Note that /dev/sda1 is the partition we will be expanding.
Increasing the virtual hard disk
First off we increase the allocated disk space on the virtual machine itself.
VMware virtual disk increase
Booting into the GParted Live CD
Mount GParted live CD



Now we are ready to power on the virtual machine.
Once the virtual machine has powered on and you have booted to the CD, you will be presented with the following menu, just press enter to boot into GParted Live (Default Settings).
GParted
After some time you will then arrive at the following screen, for this I did not change anything and just accepted the defaults by pressing enter.
GParted
You will then be prompted to select a language, pressing enter defaults to English.
GParted
Next we select the default option 0 by pressing enter as we will be working with the GUI.
GParted
Once complete you will be presented with the GUI with GParted already open, if it is not already open you can select it from the Desktop icon.
GParted
As you can see the original /dev/sda1 partition that is making use of the 20gb disk is there, as well as the new unallocated 10gb from when we increased the size of the virtual hard disk earlier. The space between the two is the swap space. The total /dev/sda disk size of 30gb is also shown.
What needs to be done now is get /dev/sda1 to take up that unallocated space, this is not currently possible because swap is in the way so we need to move things around. If you do not have swap in between the partition to be extended and the unallocated space then you will be able to skip down a few steps until you arrive at the image where /dev/sda1 and the unallocated space are next to each other.
First we select /dev/sda2 which is the extended partition containing the swap, we want to expand this to include the 10gb of unallocated space.
Select /dev/sda2 and click “Resize/Move” and you will be presented with the following.
GParted
Basically you just need to drag the black arrow of /dev/sda2 all the way to the end of the unallocated space and click the Resize/Move button.
GParted
After doing this, you should see /dev/sda2 (represented by the blue box) spread out over the unallocated space.
GParted
This change and all further changes will not yet be applied, you can see the tasks down the bottom of the GParted interface and these will be applied only once you click the Apply button. Alternatively you can click the Undo button to remove a pending change.
This time we want to select /dev/sda5 which is the swap partition and select Resize/Move, this will result in the following.
GParted
This time rather than expanding the partition, we want to just move swap all the way to the end of the /dev/sda2 space that it is in, this is done by just dragging the box to the end which will then look like this.
GParted
Click the Resize/Move button and then a warning may appear informing you that moving a partition might cause your operating system to fail to boot. It also warns that performing this move may take a long time to apply, read the warning then click OK to continue.
The GUI should now look something like the below image, where /dev/sda1 is located right next to /dev/sda2 which contains the unallocated space.
GParted
Select the /dev/sda2 extended partition and click Resize/Move.
GParted
Drag this to the right so that only the swap space is contained and the grey unallocated space is freed, click Resize/Move once complete.
GParted
Once this is complete the disk will look like this.
GParted
Now we have /dev/sda1 next to the unallocated space so we are finally ready to expand /dev/sda1. Select /dev/sda1 and click the Resize/Move button.
GParted
You will be able to perform this action straight away if you did not have swap in between /dev/sda1 and the unallocated space, the previous steps were to get swap out of the way in GParted.
Drag the arrow over so that the unallocated space is then consumed by /dev/sda1 as shown below, then click Resize/Move.
GParted
Once this is done the /dev/sda1 partition will now be using the unallocated space that was previously there. All that is left to do is click the apply button which will apply the changes – you will be prompted to confirm with a warning that data loss may occur.
Note that this may take a while depending on how much of the disk is currently in use and the amount of disk space you are increasing, because a file system check (fsck) is run before the expansion and after it to ensure that there are no issues. I have performed this method on a 400gb server in the past and to increase it 100gb took approximately 5 hours. In this example I am only increasing by 10gb and there is only about 1gb of data on the disk so this took approximately 2 minutes to finish applying.
Once complete you will see something similar to the below image, you will be able to click close once finished.
GParted
Everything is now finished, you just need to reboot the virtual machine and then boot from disk rather than CD, alternatively shut down the virtual machine and unmount the live CD and then power it back on.
Once the operating system has booted you can confirm that the disk space has expanded correctly. Below you can see that /dev/sda1 is now 30gb in size.
GParted


Thursday, September 4, 2014

All about relinking in Oracle

1)  What is relinking ?
The predefined functions for any language are defined inside the library files for that language  and it is required to Compile the code to create a binary format file (object file).The Object files are then linked together with OS libraries to create one executable file. Successful linking requires all the function definition should be found , Linking generates an executable from it's component. The terms linking and relinking mean the same in this context and used interchangeably. In both cases an executable is being built from pre-built components.

The types of files involved in relinking are:

* .c   (source code file)
* .o   (object file)
* .a   (archived file)
* .so or .sl on HP/UX (PA-RISC)  (library files)







--------------------------------------------------------------------------------

2)  What is relinking of Oracle Home Binaries ?
The Oracle software is shipped in form of object files (.o files),  archive files (.a files) and then grouped in a compressed jar format. These object files are then get "relinked" at the operating system level during installation to create usable executables.  This guarantees a reliable integration with functions provided by the OS system libraries. Generally, during relinking the current executables are renamed and saved, while the new executables are being generated. Once the new executables are in place and you have successfully tested that the new executables are working, you can delete the old executables in the directory ORACLE_HOME/bin. Each old executable has an 'O' appended to it's file name, for example, 'exp' is renamed to 'expO'.

The advantage of providing the object file is that it reduces the patch/package size , instead of providing the whole libraries  or program , only objects files are shipped which then linked with OS libraries to create usable executables.



 The following are the directories where various object files and archive files will reside in Oracle Home.

- /lib

- /usr/lib

- $ORACLE_HOME/lib

- $ORACLE_HOME/rdbms/lib

- $ORACLE_HOME/<product>/lib

There is file named “ sysliblist “ which lives in $ORACLE_HOME/rdbms/lib or $ORACLE_HOME/lib directory. It contains a list of other libraries, which need to be included.






--------------------------------------------------------------------------------

3)  Why Oracle Home Relinking is required ?
Oracle Home relinking  is required to link Oracle provided object files to the OS system library. Relinking  guarantees a reliable integration with functions provided by the OS system libraries.



Relinking occurs automatically under these circumstances:

An Oracle Database has  been  installed with Oracle Universal Installer ( OUI )
An Oracle Database Patchset  has been applied via Oracle Universal Installer ( OUI )
An Oracle Database Patch has been applied  using  “ opatch tool “
Relinking can also be performed manually.






--------------------------------------------------------------------------------

4)  When Manual relinking is required?
Manual relinking is required in below situations.

A)  After OS upgrade, Generally OS Vendors guarantee operating system binary compatibility, therefore, no  reinstall or relink of the Oracle software is required when upgrading these operating systems unless  specifically stated otherwise.

"However Oracle recommends performing manual relinking of Oracle Home binaries after OS upgrade".

B)   After Operating system has been patched.( Recommended ).

C)   Relinking phase during installation of Oracle Home has errors/warnings.

D)  Application of a RDBMS patch failed in relinking phase.

E)   Applications gives error for missing lib files in RDBMS home.

F)   Troubleshooting RDBMS home binaries issue.

G)  After manually modifying RDBMS home binary permissions.

H)  Verifying Integrity of Oracle Home Binaries.

I)  Resetting Oracle Home binaries permission.




--------------------------------------------------------------------------------



5)  Is relinking required after an OS upgrade , Downgrade , Patching or removal of the patch ?
Yes, Oracle recommends to perform manual relinking of Oracle Home Binaries after OS Upgrade , Patching , Downgrade or removal of the Patch or any change which impact OS library behavior . Successful relinking shows Oracle Executable are properly linked with OS binaries.


For more info check Metalink:

root.sh - Purpose of oraenv, coraenv & dbhome

The oraenv and coraenv utilities both aid in setting the Oracle environment on UNIX systems (other utilities exist on Windows platform that enable the Oracle Home to be set.) The coraenv utility is appropriate for the UNIX C Shell; oraenv should be used with either the Bourne or Korn shells.

Database operations require the ORACLE_HOME to be set before the user may access the database. If ORACLE_HOME is not set, commands such as sqlplus, exp, or any other utility for that matter, will not be found.

Both utilities are shell scripts that do the same thing in the different UNIX shells. They will prompt for a SID of the database unless ORAENV_ASK is set to N. The utility will also append the ORACLE_HOME value to the path, marking the location of the utility.

The oraenv command will prompt for the SID of the database that you wish $ORACLE_HOME to access.

$ . oraenv

ORACLE_SID = [] ? ASG920

The dbhome utility can now be used to verify that $ORACLE_HOME is correct.

$ dbhome

/usr/oracle/9.2.0

The “dot space” part of the command is required to make the environment change with the parent shell, as opposed to entering a command without it which would only affect the subshell running that process.

These commands can be used to avoid specifying the network service name when issuing commands. For instance, without using oraenv, a sqlplus command would look like:

$ sqlplus system/manager@nameofservice as sysdba

whereas after oraenv has been executed, the following command would work:

$ sqlplus system/manager as sysdba



Source: http://blog.abigold.fr/joomla/index.php?option=com_content&view=article&id=200:oraenvcoraenvdbhome&catid=41:command-batch-utility-utilitaire&Itemid=66

Tuesday, September 2, 2014

adpreclone.pl dbTier - Can't locate strict.pm in @INC

On running adcfgclone.pl on 11.2.0.3 RDBMS ORACLE_HOME, it got errored out with the message below.

Issue:
$cd $ORACLE_HOME/appsutil/scripts/$CONTEXT_NAME

$ perl adcfgclone.pl dbTechStack
Can't locate strict.pm in @INC (@INC contains: /erpR1213/oracle/11.2.0/perl/lib/5.8.3 /erpR1213/oracle/11.2.0/perl/lib/site_perl/5.8.3 /erpR1213/oracle/11.2.0/appsutil/perl ../lib/5.10.0/sun4-solaris-thread-multi-64 ../lib/5.10.0 ../lib/site_perl/5.10.0/sun4-solaris-thread-multi-64 ../lib/site_perl/5.10.0 ../lib/5.10.0 ../lib/5.10.0/sun4-solaris-thread-multi-64 ../lib/site_perl .) at adcfgclone.pl line 27.
BEGIN failed--compilation aborted at adcfgclone.pl line 27.


Reason:
After upgrading you database from 10g to 11g , perl utility has been upgraded from 5.8.3 to 5.10.0.


Solution:
This is a known issue and now documented in My Oracle Support Article ADPreclone Fails When Can't Find Strict.PM Following Database Upgrade to 11gR2 [ID 1139403.1].

11.2.0.3 ships with perl 5.10.0. So you need to change the values of context variables pointing to PERL5LIB and ADPERLPRG inside the context file.

vi $CONTEXT_FILE
Global replace 5.8.3 with 5.10.0
Save
cd $ORACLE_HOME/appsutil/template
vi adxdbctx.tmp
Global replace 5.8.3 with 5.10.0

Run adcfgclone.pl, or adconfig or adpreclone.pl and it will work.

Monday, August 25, 2014

Which is Better: Forms Servlet or Socket Mode?

Many products within the Oracle E-Business Suite have screens that are built with Oracle Forms.  Oracle Forms can be run in either servlet mode or socket mode.  Apps 11i is based on Forms 6i and is configured to run in socket mode by default.  Apps 12 is based on Forms 10g and is configured to run in servlet mode by default. What are these modes, and which is better?
What is Forms Servlet Mode?
The Forms Listener Servlet is a Java servlet that delivers the ability to run Oracle Forms applications over HTTP and HTTPS connections. It manages the creation of a Forms Server Runtime process for each client, as well as network communications between the client and its associated Forms Server Runtime process.
The desktop client sends HTTP requests and receives HTTP responses from the web server. The HTTP Listener on the web server acts as the network endpoint for the client, keeping other servers and ports from being exposed at the firewall.
Forms listener servlet diagram showing firewalls desktop client and oc4j container on application tier
What is Forms Socket Mode?
Initial releases of the Oracle Forms Server product used a simple method for connecting the client to the server. The connection from the desktop client to the Forms Listener process was accomplished using a direct socket connection.  The direct socket connection mode was suitable for companies providing thin client access to Forms applications within their corporate local area networks. For the direct socket connection mode, the client had to be able to see the server and had to have permission to establish a direct network connection.
Although the direct socket connection mode is perfectly suited for deployments within a company’s internal network, it's not the best choice for application deployment via unsecured network paths via the Internet. A company connected to the Internet typically employs a strict policy defining the types of network connections that can be made by Internet clients to secure corporate networks. Permitting a direct socket connection from an external client exposes the company to potential risk because the true identity of the client can be hard to determine.
Servlet Mode Advantages
  1. HTTP and HTTPS traffic is easily recognizable by routers, while socket mode communications is generally considered suspect and treated on an exception basis. 
  2. Existing networking hardware can be used to support basic functions such as load-balancing and packet encryption for network transit.
  3. More resilient to network and firewall reconfigurations.
  4. More robust: servlet connections can be reestablished if network connections drop unexpectedly for Forms, Framework, and JSP-based pages.
  5. Is the only supported method for generic Oracle Forms customers, and therefore is more thoroughly tested by the Forms and E-Business Suite product groups.
  6. Performance traffic can be monitored via tools like Oracle Real User Experience Insight (RUEI).
  7. Socket mode is not supported on Windows-based server platforms.
Socket Mode Advantages
  1. Uses up to 40% less bandwidth than Forms servlet mode.  This may be perceived by Wide Area Network (WAN) users as causing slower responsiveness, depending upon network latency.
  2. Uses fewer application-tier JVM resources than servlet mode, due to fewer TCP turns and lack of overhead associated with HTTP POST handling.
Switching Apps Deployments Between Modes
Due to its numerous advantages, Forms servlet mode is the preferred and recommended deployment model for Forms on the web. 
There may be circumstances where you need to switch between the default Forms modes.  You might wish to switch your Oracle E-Business Suite Release 12 environment to socket mode to improve performance or reduce network load.  You might wish to switch your Apps 11i environment to servlet mode as part of your rollout to external web-based end-users outside of your organization.
If you're running Apps 11i and would like to switch to servlet mode, see:
If you're running Apps 12 and would like to switch to socket mode, see:



Source: https://blogs.oracle.com/stevenChan/entry/which_is_better_forms_servlet_or_socket_mode

Friday, August 15, 2014

Installing a lower version rpm using YUM

You are trying to install a rpm and it got errored because of "missing dependency" where the dependency required is already installed but it's on a higher version.

# yum install ocfs2-2.6.9-67.0.0.0.1.ELxenU-1.2.7-1.el4
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for ocfs2-2.6.9-67.0.0.0.1.ELxenU to pack into transaction set.
ocfs2-2.6.9-67.0.0.0.1.EL 100% |=========================| 2.9 kB 00:00
---> Package ocfs2-2.6.9-67.0.0.0.1.ELxenU.i686 0:1.2.7-1.el4 set to be updated
--> Running transaction check
--> Processing Dependency: kernel-xenU = 2.6.9-67.0.0.0.1.EL for package: ocfs2-2.6.9-67.0.0.0.1.ELxenU
--> Finished Dependency Resolution
Error: Missing Dependency: kernel-xenU = 2.6.9-67.0.0.0.1.EL is needed by package ocfs2-2.6.9-67.0.0.0.1.ELxenU

Step 1:
Identify the "missing dependency" package you have.

# yum list kernel-xenU*
Setting up repositories
Reading repository metadata in from local files
Installed Packages
kernel-xenU.i686                         2.6.9-103.0.0.0.1.EL   installed
kernel-xenU-devel.i686                   2.6.9-103.0.0.0.1.EL   installed


Step 2:
If you have the higher version package remove it.

# yum remove kernel-xenU.i686
Setting up Remove Process
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package kernel-xenU.i686 0:2.6.9-103.0.0.0.1.EL set to be erased
--> Running transaction check

Dependencies Resolved
=============================================================================
Package Arch Version Repository Size
=============================================================================
Removing:
kernel-xenU i686 2.6.9-103.0.0.0.1.EL installed 8.4 M

Transaction Summary
=============================================================================
Install 0 Package(s)
Update 0 Package(s)
Remove 1 Package(s)
Total download size: 0
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Removing : kernel-xenU ######################### [1/1]

Removed: kernel-xenU.i686 0:2.6.9-103.0.0.0.1.EL
Complete!


Step 3:
Install the package with the required version

# yum install kernel-xenU-2.6.9-67.0.0.0.1.EL
Setting up Install Process
Setting up repositories
el4_latest 100% |=========================| 1.4 kB 00:00
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for kernel-xenU to pack into transaction set.
kernel-xenU-2.6.9-67.0.0. 100% |=========================| 198 kB 00:02
---> Package kernel-xenU.i686 0:2.6.9-67.0.0.0.1.EL set to be installed
--> Running transaction check

Dependencies Resolved=============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
kernel-xenU i686 2.6.9-67.0.0.0.1.EL el4_latest 3.6 M

Transaction Summary
=============================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 3.6 M
Is this ok [y/N]: y
Downloading Packages:
(1/1): kernel-xenU-2.6.9- 100% |=========================| 3.6 MB 00:37
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: kernel-xenU ######################### [1/1]
WARNING: No module mptbase found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway
WARNING: No module mptscsi found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway
WARNING: No module mptspi found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway
WARNING: No module mptsas found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway
WARNING: No module mptscsih found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway
WARNING: No module ata_piix found for kernel 2.6.9-67.0.0.0.1.ELxenU, continuing anyway

Installed: kernel-xenU.i686 0:2.6.9-67.0.0.0.1.EL
Complete!
[root@shared Desktop]#


Step 4:
Try install your main package.

# yum install ocfs2-2.6.9-67.0.0.0.1.ELxenU-1.2.7-1.el4
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package ocfs2-2.6.9-67.0.0.0.1.ELxenU.i686 0:1.2.7-1.el4 set to be updated
--> Running transaction check
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
ocfs2-2.6.9-67.0.0.0.1.ELxenU i686 1.2.7-1.el4 el4_latest 296 k

Transaction Summary
=============================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 296 k
Is this ok [y/N]: y
Downloading Packages:
(1/1): ocfs2-2.6.9-67.0.0 100% |=========================| 296 kB 00:02
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: ocfs2-2.6.9-67.0.0.0.1.ELxen ######################### [1/1]

Installed: ocfs2-2.6.9-67.0.0.0.1.ELxenU.i686 0:1.2.7-1.el4
Complete!

Change/Remove node entries from OCFS2 config file

Step 1: Stop the cluster service 
#/etc/init.d/o2cb offline
#/etc/init.d/o2cb unload


Step 2: Edit the config file 
/etc/ocfs2/cluster.conf


Step 3: Start the cluster service
#/etc/init.d/o2cb load
#/etc/init.d/o2cb online
 
Source: https://oss.oracle.com/projects/ocfs2/dist/documentation/v1.2/ocfs2_faq.html#O2CB

Changing the IP Address in 11i & R12



Symptoms
Users are not able to Log into the E-Business Suite Instance.  Trying to access the E-Biz Instance, statis page redirection to /OA_HTML/ApssLogin is resulting in "page can't find"
Cause
The IP address of the Instance is changed but DBA followed incorrect method.
Hence new IP address wasn't propogated to FND_NODES resulting in error.
Solution
E-Business Suite Instance recognise host name of the node not IP address, but it does store the IP address in FND_NODES under SERVER_ADDRESS column. Follow the correct method of IP Address Change in E-Business Suite Instance.
Middle Tier
1. Change the IP address on the servers. Remember to check changes at all places depending on the Operating System e.g. /etcc/hosts in Linux.


2. Ensure to change the entry for the hostname in the DNS lookup table i.e. specify the new IP address at the DNS server. Check it with 'nslookup'.


3. Stop the Middle Tier Services.


4. Run the following command to remove the old IP address from the Oracle Applications tables:
> perl $AD_TOP/bin/adgentns.pl appspass=apps contextfile=$CONTEXT_FILE -removeserver

5. Connect to SQL*Plus as apps user and run:
begin
FND_NET_SERVICES.remove_server('<SID>', '<hostname>');
end;
/
commit;
/
Note: Replace <SID> by the SID of the environment and <hostname> by the hostname in the environment. Both must be entered in upper case. 

6. Run AutoConfig on the Middle Tier to populate the FND_NODES.

7. Use following script to check if the change is reflected in FND_NODES table:
spool fnd_nodes
set pagesize 50
col node_name format a15
col server_id format a8
col server_address format a15
col platform_code format a4
col webhost format a12
col domain format a20
col virtual_ip format a12
set linesize 132
select node_id, platform_code, support_db D, support_cp C, support_admin A, support_forms F,
support_web W, node_name, server_id, server_address, domain, webhost, virtual_ip
from fnd_nodes
order by node_id;

Now the FND_NODES should have correct IP Address value.

8. For R12, follow Note 555214.1 OACORE Processes Won't Start After Increasing Their Number In Oracle Applications Release 12 In Context.xml to purge the lock files.


9. Start the Middle Tier Services.


Database Layer
1. Look for the hardcoded old IP Address in the following files:
a) listener.ora
b) tnsnames.ora (Local Naming) or check if any other naming method is used to resolve address.
Check if any of the parameter using the old IP Address.

2) Check if the parameter LOCAL_LISTENER and REMOTE_LISTENER parameter been set in Database Initialization file.
3) If its a Production Instance then its recommended to take the backup of the Database.
4) Please refer the Note 274476.1 and Note 363609.1 to have a detailed view to change the IP Address of the Database Server.
5) As the change is made at the OS (Operating System) level.Please ensure that the IP address gets reflected in the DNS server and also in the local host file.


Source: Correct Method of Changing the IP Address in 11i & R12 (Doc ID 751328.1)

Wednesday, August 13, 2014

Create Multiple IP Addresses to One Single Network Interface

Source: http://www.tecmint.com/create-multiple-ip-addresses-to-one-single-network-interface/

Install & Configure YUM on Linux

source: http://public-yum.oracle.com/#a6

Step 1:

cd /etc/yum.repos.d wget http://public-yum.oracle.com/public-yum-ovm2.repo

Step 2:
Open the yum configuration file in a text editor
Locate the section in the file for the repository you plan to update from, e.g. [el4_u6_base]
Change enabled=0 to enabled=1

Step3:

yum list
yum install firefox --- To install firefox software.

Wednesday, August 6, 2014

Oracle E-Business Suite Technology Webcasts

https://blogs.oracle.com/stevenChan/entry/e_business_suite_technology_learning

R11i / R12 : EBS Technology area - Webcasts delivered by Support and Development (Doc ID 1186338.1)
 

Migration Of Non-ASM 11g Database To ASM



http://orasteps.wordpress.com/2013/04/23/migration-of-non-asm-11g-database-to-asm/

Tuesday, August 5, 2014

Adding & Configuring a new disk to a VMWare Virtual Machine in Linux

Source: http://www.matttopper.com/2006/05/adding-a-new-disk-to-a-vmware-virtual-machine-in-linux/comment-page-5/
 
http://download.parallels.com/desktop/v9/ga/docs/en_US/Parallels%20Desktop%20User%27s%20Guide/27773.htm



Step 1: Open virtual machine settings
Select your virtual machine, as you can see from the photo I selected the Infrastructure virtual machine. Next press the “Edit virtual machine settings’ to open the Virtual Machine Settings dialog.
 

Step 2: Add new hardware
From the “Virtual Machine Settings” dialog select the “Add…” button at the bottom of the screen. From this dialog you can also modify how much memory you dedicate to the machine when it boots.

Step 3: Select new hard disk
From this screen we can see the many types of hardware we can add to a virtual machine. You can emulate just about any piece of hardware that one can expect in a modern operating system. It definitely makes testing with different configurations and devices much easier. For our example we want to select “Hard Disk” and then select the “Next >” button.

Step 4: Create the virtual disk
In the next screen we see the three options for adding a new disk. We can “Create a new virtual disk”, this will create a brand new disk on the guest operating system. The second option, “Use an existing virtual disk”, allows you to mount a disk from another virtual machine. I like to do this with my “source” drive. I have one virtual disk that I’ve made that has all the Oracle and Linux CDs on it, that way I can just mount it to the machine I need when I have to do a new install instead of copying the binaries I need across disks, its definitely a big time saver. The last option is to “Use a physical disk”, this allows you to mount a local physical disk to the operating system. This option is akin to NFS mounting a drive to a virtual machine. To add a new disk we select the “Create a new virtual disk” option and select the “Next >” button.

Step 5: Select type of disk
Next we want to select the type of disk. I’ve been using VMWare for a long time and agree that the recommended Virtual Disk Type should be SCSI. I don’t know why, but I’ve had much better success with the SCSI virtual disks than the IDE ones. So in this step we want to select “SCSI (Recommended)” and the “Next >” button.

Step 6: Set disk size and options
Now we want to set the size of the disk we are creating. One of the nice features of VMWare is that you don’t have to allocate all of the disk when you create it. So if you create a 40 GB disk it doesn’t have to take it all right away, the disk will grow as your virtual machine needs it. I will say this is a big performance hit you take when the disk has to extend, but for most applications its OK. Also, I will warn that if the virtual disk grows and there is no physical disk left on the host operating system you will see a catastrophic failure and in most cases both the host and guest operating systems lock up and become unusable. (Don’t say I didn’t warn you) Lastly, you can split the files into 2GB sizes, while this isn’t necessary, it just makes all the disks much easier to manage and move around. For this step we want to set our disk size (12 GB in this case), I chose not to allocate the disk space right now (the machine has a 300 GB drive and has only 20 GB on it) and Split disk into 2 GB files.

Step 7: Name the disk file
This is actually pretty simple in that you decide what you want to physically call the disk and where to put it. .vmdk is the extension for VMWare virtual disks. After we name the disk we can select the “Finish” button which adds the disk to the virtual machine.

Step 8: Ensure new disk exists
So now we can see that the new disk has been added to the “Virtual Machine Settings” within the selected virtual machine. From here the disk acts just like it would if you added a new disk to a standalone server. So we select the “OK” button to continue.

Step 9: Boot the virtual machine
From here we just start the virtual machine like we would normally, either by selecting the button on the toolbar or selecting the “Start this virtual machine” link.

Step 10: Virtual machine start up
The machine boots normally as it would any other time.

Step 11: Create the Partition
After we’ve logged in and accessed a terminal window as root (or another user with root/sudo privs) we first want to run fdisk on the newly created drive. In Linux the first SCSI drive is sda, the second sdb, the third sdc, etc. since this was the second SCSI drive we added to the system, the device is known as /dev/sdb
The first command we want to run is fdisk /dev/sdb (NOTE: Thanks to everyone that caught my typo here) this utility works very much like the DOS utility of the old days and allows you to create and manage partitions. To create a new partition we enter the command n to create a new partition. This is going to be a primary partition p, and the first partition number 1. Because I want this disk to consume the full 12 GB I specified earlier we start at the first cylinder and end it at the last cylinder. We then want to write the partition table with the new partition we have just created so we enter the command w which writes the new table and exits fdisk.

Step 12: Format the partition
Now that we’ve create the partition, we now want to format the first with the new file system. I’ve decided to use ext3 filesystem for this disk, ext3 provides all the features of the classic ext2 file system plus journaling which helps to prevent disk corruption in the event of an improper shutdown and speeds up the recovery process. For a good overview of Linux standard file systems check out this article: http://linux.org.mt/article/filesystems So, to format the new partition we enter the command mkfs -t ext3 /dev/sdb1. This command makes a new files system with the type t ext3 on the /dev/sdb1 partition, this is the first partition on the sdb disk.
Create new filesystem in the virtual machine
Step 13: Create the mount point
Determine where you want to add the new virtual disk you’ve created. I like to create a partition specifically for all the software I install after the basic Linux install called /software to do that we run mkdir /software, just a simple make directory command. Once that is complete we then want to mount the newly created partition. Because we haven’t added the partition to the /etc/fstab yet we have to mount it manually. To do that we run mount -t ext3 /dev/sdb1 /software. To break down this command we run mount with the ext3 filesystem type, the partition /dev/sdb1 to the directory /software. Pretty simple and straight forward. To check that the partition is properly mounted we run df -k which shows us the mounted partitions and the amount of available space.

Step 14: Open the fstab file
The fstab file holds all of the used disks and partitions, and determines how they are supposed to be used by the operating system. So we edit the file to add the newly created partition

http://www.matttopper.com/images/blog/adding_disk_to_vmware/15.jpg
Step 15: Modify the fstab for the new partition
After we open the fstab file in the previous step we add the following line:
/dev/sdb1 /software ext3 defaults 1 1
The first column is the partition name, the second is the default mount point, the third is the filesystem type. The fourth is the mount options, in this case I used default which mounts the drive rw, suid, dev, exec, auto, nouser and asynchronous. The 5th and 6th options are for the dump and fsck options. If dump is set to 1 the filesystem is marked to be backed up, if you are going to have sensitive material on the drive its a good idea to set it to 1. If fsck is set to greater than 1, then the operating system uses the number to determine in what order fsck should be run during start up. If it is set to 0 it will be ignored such as in the case of a cdrom drive since its a solid state disk. For more information on the fstab file check out this article: http://www.tuxfiles.org/linuxhelp/fstab.html
Lastly, we write and quit the file with the :wq command.

So now that the fstab has been written the drive will be mounted and unmounted when the machine is either started or shutdown. So there you have it, the quick and dirty process for adding a brand new disk to a virtual machine. Until next time…

Tuesday, July 22, 2014

Analyzing CPU patches for Oracle Products

Method 1:
For a EBS instance, search for the string below in the Oracle Support and select the suitable Doc you are looking for.
“Oracle E-Business Suite Releases 11i and 12 Critical Patch Update Knowledge Document”
Example:
Oracle E-Business Suite Releases 11i and 12 Critical Patch Update Knowledge Document (July 2014) (Doc ID 1668237.1)

Method 2:
If you want to know the CPUs released for the various Oracle Products, please check the link below.
http://www.oracle.com/technetwork/topics/security/alerts-086861.html#CriticalPatchUpdates