Small addition to the instruction below:
Sometimes, when trying to delete Oracle home directory (say D:\Ora8i), you
may get an error, saying "could not delete" some oracle .dll (don't remember
the exact name) from d:\Ora8i\bin directory - file "is in use".
This may happen, because MSDTC (Microsoft Distributed Transactions
Coordinator service) when running (and by default it is set to startup
"automatically" on system boot) is loading before mentioned oracle .dll into
memory for some reason (or without any reasons?:). Thus, you may get this
error, when trying to delete the .dll. So, stopping this service will allow
to delete the file.
In fact, if you know, that you are not using this service (or any other
service set to startup "automatically") change it's settings to startup
manually. Why wasting system resources?
Igor Neyman, OCP DBA
Perceptron, Inc.
(734)414-4627
[EMAIL PROTECTED]
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Thursday, October 25, 2001 9:00 PM
Gotta love Microsoft. Here's some instructions I got off this list from
"Novice DBA" a while back on how to properly delete an Oracle Database on
NT/2000:
Clearing up the System after an incomplete or improper installation of
Oracle
----------------------------------------------------------------------------
-
Database Installation involves a set of procedures which need to be
followed
in order to have a proper working installation. If we follow these
procedures the Installation will be fine and usually problems related to
improper installation do not arise. But it is not always possible to get a
proper installation for the first time. This document is a troubleshooting
guide which would help to clear off the mess created by an improper
installation in a WindowsNT system.
First we need to know that During installation Oracle writes into certain
directories (which we would have specified during installation) and also
into the WindowsNT registry. WindowsNT registry is a repository of
information about all the installed products and configurations on that
system. When we are installing Oracle a directory is created in the
registry
which is name oracle which is present in the HKEY_LOCAL_MACHINE/SOFTWARE/
In the case of an improper installation the problems faced are
· We may not be able to uninstall the incomplete installation
· We may succeed in uninstalling the incomplete installation but yet face
problems with WindowsNT Services.
· Every time we log into WindowsNT we may get an error 'at least one system
service failed to start' which may be an Oracle service from the earlier
installation.
· We may get an error while creating a database 'the database with the name
you specified already exists please chose another name' which again may be
attributed to an improper un-installation.(I am not pretty comfortable
with
the Oracle's Un-installation utility because I feel it does not uninstall
everything)
Keeping the above points in mind it would be better if we know where
exactly
to look in case we are faced with such problems. When oracle is installed
it
makes entries in the following places
1. The first and the foremost- the directory in which we install the Oracle
database (say D:\Ora8i)
2. The second is the inventory it maintains in the directory c:\program
files\oracle
3. The third HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE in the registry
4. The other place is HKEY_LOCAL_MACHINE/SYSTEM . Inside this entry there
are three nodes controlset1,controlset2 and currentcontrolset. These nodes
in turn have 4 nodes out of which 2 are important to us. They are Enum and
Services. The Enum node has got two nodes out of which the 'root' node is
of
great interest to us because it stores details about all the services that
are running on a WindowsNT system. The other node of interest from the
controlsets is Services. The services node has got a list of services
running on a WindowsNT system.
In case we need to clean up the system after an incomplete installation we
can follow the following steps
Delete the home directory where Oracle is installed
Delete the folder C:\program files\oracle Note:- This clears off
information
about any other Oracle utility installed on that system.
Delete the registry entry HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE Warning:- This
clears off information about any other Oracle utility installed on that
system and you may not be able to run those programs again.
Delete the Oracle Related services from
HKEY_LOCAL_MACHINE/SYSTEM/CONTROLSETx/ENUM/ROOT/ . They will be named with
a
prefix LEGACY_ORACLE... Note:- You will have to use regedt32.exe to invoke
registry editor and not regedit. You will have to use the security menu and
give permissions to yourself before deleting these entries. Else it will
not
work . It is to be noted that there are three control sets and all the
three
(in reality any 2) need to be cleared off these un-necessary entries.
Delete the Oracle Related services from
HKEY_LOCAL_MACHINE/SYSTEM/CONTROLSETx/SERVICES . They will have a prefix
'Oracle'.
============================================================
I have also attached a document having the same contents
Jared will this get a chance ??
joking??
coz
I am a
novice
David A. Barbour
Oracle DBA, OCP
AISD
512-414-1002
Leslie Lu
<leslie_y_lu@y To: Multiple recipients of list
ORACLE-L <[EMAIL PROTECTED]>
ahoo.com> cc:
Sent by: Subject: URGENT -- db already
exist ???
[EMAIL PROTECTED]
om
10/25/2001
04:10 PM
Please respond
to ORACLE-L
Hi all,
I created a 815 database on NT4. Since there is
something wrong with it, I used db config assist to
delete it. When I tried to create a database with
exactly the same name, I got message that "db already
exist." I already deleted entried in tnsnames and
listener.ora. I must use that particular name. Where
else does the name got logged?
Thank you!
Leslie
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