Is my Oracle Home used?

Hi,
I have a task to uninstall all the unused Oracle Homes from a server.
But before doing that, I want to know whether there are any databases running on that particular home or not? How do I find that?
I checked /etc/oratab file and confirmed that there are no databases associated with this unused Oracle Homes.
Do I have to check some other location? Is there any command to check whether this Oracle Home is being used or not?
Please help me out!
Thanks!

Source:
http://tonguc.oracleturk.org/index.php/2006/09/21/how-to-get-oracle_home-from-sql-or-plsql/
select NVL(substr(file_spec, 1, instr(file_spec, '\', -1, 2) -1) , substr(file_spec, 1, instr(file_spec, '/', -1, 2) -1)) folder from dba_libraries where library_name = 'DBMS_SUMADV_LIB';Use the above to connect every database and make sure that the oracle home you're trying remove aren't present.
HTH
-Anantha

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Edited by: ManoRangasamy on Nov 30, 2010 9:42 AM

Well, the obvious answer about databases being affected has to include any 9i database if the 9i home/software is removed. Other than that, no, assuming none of the other databases have any dependencies related to 9i (e.g., database links).
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Want to use single oracle home for multiple database releases

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Thanks.

You'll probably get the same info from Support, but the workaround is to use the Patch Database (however that doesn't work if there's no DB target associated to that home). If you were trying to do patchign out of place (clone home, patch, then move db's), EM can do this for you. If you're just installing a new DB Home and trying to patch, then i don' think there's another workaround. The base bug is marked fixed though, so a backport for the 12.1.0.6 plugin should be available very soon. I would ask the support analyst to request the backport for your plugin/patch level...

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Hi All,
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BhaviSavla;
I guess you dint understand what I have said!!! I HAVE ALREADY READ THAT THOUSAND TIMES!!! Please think double&triple time while you are talking wiht Hussein Sawwan about EBS related questions. I am sure about Hussein Sawwan understand your question as he understand other questions and already he has been answered your question(If you have ability to understand what you read)
I strongly suggest you about TO BE KIND-RESPECT with forum users which are trying to help other people here.
And I am still not able to understand the actual advantage of having TWO ORACLE_HOME...After read something, If you still understand than dont blame forum users. Choose easy way... Rise SR!
Kindly do not post just to increase your number of posts on this forum!! If you cannot help me in anyway with this, kindly do not post!If you dont follow OTN forum site consistently than DO NOT MAKE COMMENT about people here If the topic is Hussein Sawwan.
I must remind you something... He has more than 50k post wiht 51k points which mean he made post here like your_post_count*1500times... Wiht other words, his each post equal to 1 point, which mean his each post has meaning which are helpful!
Do you have capability to calculate how mch time he spend here?
Dont thing so!
Moderator, I belive this question is already answered If the poster read notes! Please close or lock this thread!
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Multiple oracle home installation

I am going to install oracle 11g2 on hpux server. The server already has 10g on it and the plan is to run both for sometimes.
Unfortunately, IUnfortunately, I don’t have prior experience installing multi-homed oracle software and I
need help on how to supply the oracle home directory name to the installer:
Do I have to supply the installation (OUI) with the oracle home directory: i.e
Exiting oracle home: /u00/app/oracle/product/10.2.0/db_1
For the new oracle home: /u00/app/oracle/product/11.2.0/db_2
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thank you,
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What I did was create two profiles. My OS is similar, but NOT the same
My default is Oracle 11.
However I need a way to go back between Oracle Homes so I created an "o10g.profile" and a "o11g.profile"
o10g.profile
TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR
export ORACLE_BASE=/u01/app/oracle
unset ORACLE_HOME
export ORACLE_HOME=/u01/app/oracle/product/10.2.0
#export DISPLAY=localhost:0.0
export TZ=CST6CDT
export ORA_OCI_NO_OPTIMIZED_FETCH=1
ORA_OCI_NO_OPTIMIZED_FETCH=1; export ORA_OCI_NO_OPTIMIZED_FETCH
export ORACLE_SID=STANDBY
export ORACLE_TERM=xterm
#export TNS_ADMIN= Set if sqlnet.ora, tnsnames.ora, etc. are not in $ORACLE_HOME/network/admin
export NLS_LANG=AMERICAN;
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_LIBRARY_PATH
# Set shell search paths
unset PATH
PATH=/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin; export PATH
export PATH=$PATH:$ORACLE_HOME/bin
#CLASSPATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
CLASSPATH=$CLASSPATH:$ORACLE_HOME/network/jlibNotice the unset ORACLE_HOME at the top, this is key. Also the unset PATH.
Now compare it to my o11g.profile file
TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR
export ORACLE_BASE=/u01/app/oracle
unset ORACLE_HOME
export ORACLE_HOME=/u01/app/oracle/product/11.2.0
#export DISPLAY=localhost:0.0
export TZ=CST6CDT
export ORA_OCI_NO_OPTIMIZED_FETCH=1
ORA_OCI_NO_OPTIMIZED_FETCH=1; export ORA_OCI_NO_OPTIMIZED_FETCH
export ORACLE_SID=PRIMARY
export ORACLE_TERM=xterm
#export TNS_ADMIN= Set if sqlnet.ora, tnsnames.ora, etc. are not in $ORACLE_HOME/network/admin
export NLS_LANG=AMERICAN;
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_LIBRARY_PATH
# Set shell search paths
unset PATH
PATH=/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin; export PATH
export PATH=$PATH:$ORACLE_HOME/bin
#CLASSPATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
CLASSPATH=$CLASSPATH:$ORACLE_HOME/network/jlibIts probably a great idea to review the document Srini refers to. However this is a short and sweet example. In my case I can issue a
source o10g.profileAnd be on Oracle 10. So to install the other version I created the profile for it and then then used it to switch to that ENV for the install.
Best Regards
mseberg

Multiple Oracle home

Hi ,
I have some doubt which needs to be cleared.
If I will install multiple oracle home like ORACLE_HOME=/u01/app/oracle/product/10.1.0/asm
ORACLE_HOME=/u01/app/oracle/product/9.2.0
ORACLE_HOME=/u01/app/oracle/product/10.2.0
ORACLE_HOME=/u01/app/oracle/product/crs
Now in this when I will set export ORACLE_HOME then which version will be picked up.
Is ORAENV isgoing to come into picture.
Please throw some light on it.
Mk

asifkabirdba wrote:
You have installed your oracle product (db,application server) using one of os user like oracle,appl,oraprod ect. When you log in to your OS by using OS user then .profile file executed automatically to export necessary environmental variables. You did not mention your OS. Normally you will find it to your OS user home directory. You can edit this file to set your desired ORACLE_HOME.
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export PATH
unset USERNAME
ORACLE_HOME=/oracle/product/102
ORACLE_SID=ogtest
LD_LIBRARY_PATH=$ORACLE_HOME/lib
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export ORACLE_SID
export LD_LIBRARY_PATH
export TNS_ADMIN
export PATH=$PATH:$ORACLE_HOME/bin
Regards
Asif KabirAsif,
Your advice to hard code the Oracle environment directly into the profile is poorly thought out. And a direct carry over of 'worst practices' unfortunately taught in some Oracle related classes.
The OP did correctly identify oraenv (as described in the "Administrator's Reference for UNIX-Based Operating Systems" at http://www.oracle.com/pls/db102/portal.portal_db?selected=4) as the preferred solution. Putting THAT into the profile (using ORAENV_ASK as described in the manual) is OK.
I'll leave you to figure out why the difference - I've posted many times about that in these forums.
/Hans

CRS install fails Oracle home incompatibility checks ( 10G )

Hi,
I'm trying to install RAC for 10.2.0 . The first step is to install cluster Ready Services ( On red hat linux ) . When it does the product specific prequisite checks, it fails on "Checking for Oracle home incompatibilities".
I get the error " Oracle clusterware cannot be installed into an existing oracle home".
I did a previous attempt at an install which failed. I have completely deleted the
/oracle/product/10.2.0/crs directory which was previously created.
If I check the environment variables, I get :
[oracle@rac1 db_1]$ env | grep -i home
HOME=/oracle
ORACLE_HOME=/oracle/product/10.2.0/db_1
So, in my thinking there is no trace now of a previous home for CRS.
So why am I getting the error ??
Thanks
George

It seems taht you have not cleared the inventory..As menioned earlier use OUI to remove the oracle_home from inventory. In case you do not wish to use the existing ORACLE_HOME=/oracle/product/10.2.0/db_1 or any other Oracle Installation on this server, then you can go ahead and remove the inventory itself.
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- Amit
http://askoracledba.blogspot.com/

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???

Forms installation problem - how do I create a new default Oracle home?

I am new to Oracle so please forgive my utter ignorance. My impression of Oracle because of how an installation
has to be done is taking a nosedive. I thought Microsoft was bad with all the re-booting but the explanation that I
read in Anubhav Seth's post about installing Dev 6i before 8i and the suggestion (not a requirement) to format the
harddisk and reinstall Windows just leaves me with my jaw hanging open. I'm having a little trouble swallowing that
one.
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So I go to the OTN page for downloads and downloaded file 6irel2nt.exe which is 264 MB in size. This file, I assume,
has forms in it -- what else I don't know because things are not explained all that well on the web site or I don't know
where to look (which implies poor organization of the web pages).
I run the 6irel2nt.exe file and end up with 11,128 new files on my computer. That's nice. I run the setup file and a step or
two into it it complains that my 'Ora81' home is already being used and that I need to install it into another Oracle Home.
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home" and basically get nowhere. My $50+ "Oracle 8i A Beginner's Guide" from Oracle Press mentions Oracle Home
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are really PowerPoint slides) is useless too. My next step will be to comb through the FAQs. All this because I cannot
believe that I have to totally uninstall one product to get another to install and then reinstall the first one. That is INSANE!
If I have gone way off track please feel free to blast me but if this is true then all I can say is that the folks at Oracle need
a lesson in KISS (Keep It Simple Stupid)! Computers and computer software are supposed to make our lives simpler
not complicate the holy hell out of them. I'll get off my soapbox now. Sorry about the whining.

I ended up uninstalling 8i and then I installed Dev 6i (Forms) and then I reinstalled 8i. I had some problems
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appears I get a dialog that states, "The Oracle Installer cannot update the system path variable to %new_path%
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The path D:\Oracle\OraWin95 was what I set up for this installation.
What I did to work around this problem was this...
(1) Go to Start - Accessories - System Tools - System Information.
(2) Click on the Tools menu
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(4) Select the Autoexec.bat tab
(5) I added D:\Oracle\OraWin95\bin to my PATH variable and unchecked the checkbox next to one of the several
lines that I have that build my PATH variable. (I have several PATH lines that simply add a path to the system
variable %path%). After the installation is complete you can go back and turn back on the paths that you had disabled.
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When reinstalling 8i and when the installation asks for an SID and you enter the SID you had used in the original
installation you may get a notice that says the SID already exists. I think this happens because the uninstall does not
clean up the registry totally, so I entered a different one. Later on, after the installation has been completed and you
are connecting to your database, you will be prompted to select an SID -- just make sure that you select the SID from
the latest installation.
I should've mentioned first that in preparing for this whole ridiculous exercise I created a directory under my Oracle
directory that I was going to use as the new 'Oracle home.' So I guess that's all one has to do to create a new Oracle
home -- just have another directory ready to install 'stuff' into.
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Creating a new database in a new Oracle home

Hi,
I'd like to add a new database using dbca, but I want it in a different Oracle Home to the other databases on the server. I notice that in the dbca I do not get an option to specify a new Oracle home. I assume it is because this tool is only for database creation and not instance creation. Do I therefore need to do a full Oracle install in order to create a second Oracle home?
Many thanks.
****Ignore this, I know what I'm doing now****
Edited by: user11201026 on Aug 6, 2009 3:52 AM

You need to better understand what an ORACLE_HOME is. An Oracle home has nothing to do with a Oracle database.
ORACLE_HOME defines the location of an installation of an Oracle software installation.
Where you decide to put a database is irrelevant to the location of an ORACLE_HOME.
One ORACLE_HOME can have zero, one, or many databases.
But you can not have an ORACLE_HOME without an installation of Oracle software.
The concept docs are at http://tahiti.oracle.com.

Is my Oracle Home used?

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