Advice on running XE on a small virtual Linux host ("Virtuozzo")

Hello,
I'm really excited by XE... I've been developing applications with Oracle at work for a couple of years now and now I can finally get rid of MySQL for the stuff I do in my spare time. Thank you, Oracle! :-)
I've got a virtual Linux root server which is hosted at a local service provider.
They call it a "VPS" (virtual private server), and it runs under Virtuozzo, http://www.sw-soft.com/products/virtuozzo/, which is somehow similar to VMWare.
My idea is to stop using the MySQL database that came preinstalled with the server and install XE instead. Currently, my server is rather limited in terms of available RAM and disk, so I'm considering an upgrade to a bigger type of VPS.
The options most compatible with my budget are:
- a virtual Linux server with 256 MB RAM and 500 MHz CPU or
- a virtual Linux server with 512 MB RAM and 1000 MHz CPU.
Besides a small Oracle XE database, I'll be running Apache with mod_python and a couple of web apps / scripts I'm writing. I don't expect high performance, I just want to have a small Oracle database to play with and to run some web pages.
Does anyone have experience with a similarly limited setup? Will the smaller server still allow some breathing room for other software, or is 256 MB the bare minimum required for Oracle itself?
Any advice is greatly appreciated!

Hello,
I finally got my server upgrade and now have a virtual machine that's "should" be big enough to run XE (256 MB memory usable, 15 GB disk)
However, installation wasn't as smooth as I had hoped... I just can't get it to work. Any ideas? I have no idea what to do next.
Memory stats (these seem to include other machines on the same host):
# free -m -t
total used free shared buffers cached
Mem: 1006 980 25 0 83 430
-/+ buffers/cache: 466 539
Swap: 2000 558 1442
Total: 3006 1538 1467
Installation:
# rpm -i oracle-xe-10.2.0.1-0.1.i386.rpm
This system does not meet the minimum requirements for swap space. Based on
the amount of physical memory available on the system, Oracle Database 10g
Express Edition requires 1509.0 MB of swap space. This system has 1442 MB
of swap space. Configure more swap space on the system and retry the installation.
error: %pre(oracle-xe-10.2.0.1-0.1) scriptlet failed, exit status 1
error: install: %pre scriptlet failed (2), skipping oracle-xe-10.2.0.1-0.1
I tried adding more swap space by creating an additional swap file, but that's not possible; swapon fails with "Operation not permitted". As far as I know, only the hosting machine can add more swap for me.
Using rpm ... --nopre ... does work, though:
# rpm -i --nopre oracle-xe-10.2.0.1-0.1.i386.rpm
Executing Post-install steps..........
usermod: `dba' is primary group name.
You must run '/etc/init.d/oracle-xe configure' as root user to
configure the database.
# /etc/init.d/oracle-xe configure
/etc/init.d/oracle-xe: line 16: /etc/init.d/functions: No such file or directory
Oracle Database 10g Express Edition Configuration
This will configure on-boot properties of Oracle Database 10g Express
Edition. The following questions will determine whether the database should
be starting upon system boot, the ports it will use, and the passwords that
will be used for database accounts. Press <Enter> to accept the defaults.
Ctrl-C will abort.
Specify the HTTP port that will be used for HTML DB [8080]:
Specify a port that will be used for the database listener [1521]:
Specify a password to be used for database accounts. Note that the same
password will be used for SYS, SYSTEM and FLOWS_020100. Oracle recommends
the use of different passwords for each database account. This can be done
after initial configuration:
Confirm the password:
Do you want Oracle Database 10g Express Edition to be started on boot (y/n) [y]:
Configuring Database...
Starting Oracle Net Listener.
oracle-xe 0:off 1:off 2:off 3:on 4:off 5:on 6:off
Starting Oracle Net Listener.
Starting Oracle Database 10g Express Edition Instance.
ps shows that the listener is running, but nothing else. Manually running /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/config/scripts/XE.sh I see this:
ORA-27102: out of memory
Linux Error: 28: No space left on device
select TO_CHAR(systimestamp,'YYYYMMDD HH:MI:SS') from dual
ERROR at line 1:
ORA-01034: ORACLE not available
[... lots of ORA-01034 after that ...]
The css.log looks like this:
Oracle Database 10g CRS Release 10.2.0.1.0 Production Copyright 1996, 2005 Oracle. All rights reserved.
[ OCRUTL][16384]u_set_ocr_error: Parameter was NULL
2005-11-26 19:15:11.509: [ OCROSD][16384]utgdv:2:ocr loc file cannot be opened
2005-11-26 19:15:11.509: [ OCROSD][16384]utopen:1: Couldnt find ocr,[ocrmirror] location in config file
[ OCRUTL][16384]u_set_gbl_comp_error: Parameter was NULL
2005-11-26 19:15:11.509: [ OCRRAW][16384]proprinit: Could not open raw device
2005-11-26 19:15:11.510: [ default][16384]a_init:7!: Backend init unsuccessful : [33]
[ OCRUTL][16384]u_set_ocr_error: Parameter was NULL
2005-11-26 19:15:11.510: [ CSSCLNT][16384]clsssinit: error(33 ) in OCR initialization
LEM stack 1: error [clsdfopen1] [
LEM stack 2: error [clsdfgenfullname] [sclsdgcwd]
Ideas, anyone? Perhaps it's impossible to run XE on this kind of virtual machine...?
Stefan

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Name Phoenix ROM BIOS PLUS Version 1.10 1.1.6
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SMBios Minor Version 5
Current Language en|US|iso8859-1
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Manufacturer Dell Inc.
SMBios Present True
SMBios Version 1.1.6
SMBios Major Version 2
SMBios Minor Version 5
Current Language en|US|iso8859-1
Release Date 3/23/2008 9:00:00 AM
Primary BIOS True
Back to Summary
Back to Top
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Data Cluster Shared Volume Online All Nodes
Snapshots Cluster Shared Volume Online All Nodes
System Cluster Shared Volume Online All Nodes
Back to Summary
Back to Top
List Cluster Network Information
List cluster-specific network settings that are stored in the cluster configuration.
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An error occurred while executing the test.
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Back to Summary
Back to Top
If it was an RPC connection issue, then i shouldnt be able to mstsc, explorer shares to host02. Well i can access them, which makes the report above is a bit misleading.
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Hi all,
I am running a fail over cluster of
Host:
2 x WS2008 R2 Data Centre
managed by VMM:
VMM 2008 R2
Virtual Host:
1x windows 2003 64bit guest host/virtual machine
I have attempted a live migration through VMM 2008 R2 and im presented withe the following error:
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(Unspecified error (0x80004005))
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1 out of the 2 hosts have an error with RPC related to network configuration:
An error occurred while executing the test.
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The RPC server is unavailable
However there are no errors or events on host02 that are showing any probelms at all.
In fact the validation report goes on to showing the rest of the configuration information of both cluster hosts as ok.
See below:
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List BIOS information from each node.
xxx-Host01
Gathering BIOS Information for xxx-Host01
Item Value
Name Phoenix ROM BIOS PLUS Version 1.10 1.1.6
Manufacturer Dell Inc.
SMBios Present True
SMBios Version 1.1.6
SMBios Major Version 2
SMBios Minor Version 5
Current Language en|US|iso8859-1
Release Date 3/23/2008 9:00:00 AM
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Item Value
Name Phoenix ROM BIOS PLUS Version 1.10 1.1.6
Manufacturer Dell Inc.
SMBios Present True
SMBios Version 1.1.6
SMBios Major Version 2
SMBios Minor Version 5
Current Language en|US|iso8859-1
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Back to Top
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Data Cluster Shared Volume Online All Nodes
Snapshots Cluster Shared Volume Online All Nodes
System Cluster Shared Volume Online All Nodes
Back to Summary
Back to Top
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List cluster-specific network settings that are stored in the cluster configuration.
Network: Cluster Network 1
DHCP Enabled: False
Network Role: Internal and client use
Metric: 10000
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10.10.0.0 20
Network: Cluster Network 2
DHCP Enabled: False
Network Role: Internal use
Metric: 1000
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10.13.0.0 24
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CrossSubnetThreshold 5
SameSubnetDelay 1000
SameSubnetThreshold 5
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Validating that Network Load Balancing is not configured on node xxx-Host02.
An error occurred while executing the test.
Failed to connect to the service manager on 'xxx-Host02'.
The RPC server is unavailable
Back to Summary
Back to Top
If it was an RPC connection issue, then i shouldnt be able to mstsc, explorer shares to host02. Well i can access them, which makes the report above is a bit misleading.
I have also checked the rpc service and it has started.
If there is anyone that can shed some light or advice me oany other option for trouble shooting this, that would be greatley appreciated.
Kind regards,
Chucky
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Virtual mail hosts: 255 character limit on SPF records

This one was a surprise to me, and caused a lot of headache, so I thought I'd pass it along.
I'm running multiple virtual mail hosts off of my doughty PowerMac single G5 1.8GHz running OS X Server 10.4.11. Some of the outgoing mail was being bounced as spam because a) there wasn't an SPF record on any of the domains and b) the domain of the mailserver didn't always match the domain of the sender. (Most often, it went out under the hostname of the server, cerberus.limbo.jcf.org—which is useless, since that's a LAN address.)
Trying to be a good citizen (and make sure that all of everyone's mail got through), I added SPF records that explicitly named each and every mailserver on the machine, just so that everything was clear and aboveboard—but they ended up being about 500 characters long.
Fastforward a week or two... and I was having problems with my DNS zones loading—I'd get errors that they'd timed out. After pulling my hair out for a while, I discovered that TXT records have a limit of 255 characters (including spaces, etc.) Some folks running servers on non-OS X Server machines have split the records over multiple TXT records (does that even work?), but you get exactly one TXT record per OS X Server machine: the Comment box.
I've now simplified the SPF records so that they read something like this:
+v=spf1 a mx mx:cerberus.limbo.jcf.org mx:cerberus.jcf.org mx:jcf.org ip:173.164.140.96/30 ip:207.58.140.213/30 include:comcast.businessclass.net include:comcast.com -all+
To translate:
• +v=spf1 a mx+ It authorizes deliveries from any IP listed in the DNS zone, and from any mailserver defined in the zone
• +mx:cerberus.limbo.jcf.org mx:cerberus.jcf.org mx:jcf.org+ It also explicitly authorizes deliveries from the server's main LAN and internet DNS names as well as the domain of the foundation for which I work (and through which emails are occasionally relayed)
• +ip:173.164.140.96/30 ip:207.58.140.213/30+ Next it authorizes the public static IP blocks for the server and the foundation's remote server
• +include:comcast.businessclass.net include:comcast.com+ Finally it includes the domain names of the ISP through which most of the mail are relayed
• -all The last item says that if the mail didn't originate from one of those addresses, it isn't ours.
(I think that I've got that right. If I've botched it anywhere, let me know, okay?)
That's 169 characters. The DNS zones loaded happily, and the mail seems to be going out without getting bounced. So far so good!
(There's probably a way to get the hostname on each email to match the domain from which it is being addressed, but I haven't gotten there yet.)
Message was edited by: David Kudler

Most often, it went out under the hostname of the server, cerberus.limbo.jcf.org—which is useless, since that's a LAN address.
You can control this via the myhostname setting in Postfix. This defines the name it uses to identify itself to remote mail servers, which sounds like it'll address a lot of your issues.
I added SPF records that explicitly named each and every mailserver on the machine, just so that everything was clear and aboveboard—but they ended up being about 500 characters long.
OK, this doesn't make sense. You don't need to list every virtual hostname for every domain.
All you need to do is add this specific mail server's address in each domain.
There's no requirement that the hostname of the mail server matches the domain name, so it's entirely valid to create an SPF record in domain1.com that lists mailserver.someotherdomain.com as authoritative. Then, as long as postfix's myhostname says it's mailserver.someotherdomain.com and your reverse DNS resolves to that address your problem is solved.
...but you get exactly one TXT record per OS X Server machine: the Comment box.
Unless you edit your zone file directly and add whatever other records you like. However, given the above, I don't think the 255-character limit should be an issue.
Even if you didn't want to mess with your zone files directly there's still a way around that - SPF allows for an 'include' record which basically tells remote servers to include the record from some other domain, so for each domain you could just tell it to include some other domain's record (which, in turn, could include another domain) allowing virtually unlimited record length (or, at least, 255 characters per domain you manage).
SPF Includes are covered here.
• include:comcast.businessclass.net include:comcast.com Finally it includes the domain names of the ISP through which most of the mail are relayed
Bzzzz. You've now allowed any other customer of comcastbusiness.net and comcast.com to send mail on your behalf. You probably don't want to do that. When you consider that 'comcast.com' includes every one of their residential customers you can see that you really don't want to do that.

Is it legal to use Macintosh virtual machine hosted by Windows operating system? If yes, please suggest recommended hardware and license cost?

Is it legal to use Macintosh virtual machine hosted by Windows operating system? If yes, please suggest recommended hardware and license cost?

steve359 wrote:
I thought that at least some version of OSX could not be VM in Mavericks, but if you say it is allowed so be it.
There are some people who dispute the details of what "the software" means in the license. From my point of view, I have a license to run all of those versions each license explicity says I can use a VM. I don't think it is illegal or even unseemly. The only version restriction I know of that the new VM policy only applies to Lion or greater. 10.6 could only be run on a VM if you had the expensive server version. The licenses do explicity list the acceptable uses and that includes OS X Server, software development, and non-commercial use. They don't want people selling online access to OS X, that's all.
I do not VM Windows on my MBP because I have no need.
Me neither. I used to though. Funny how a Mac was the most critical tool in debugging web sites on various versions of IE
I don't even run OS X in a VM anyway. It does work but it is quite resource intensive. Maybe if I had one of those new Mac Pros...

To run Mac OS X you need a host on which VMware Workstation supports Intel VT-x or AMD-V.

To run Mac OS X you need a host on which VMware Workstation supports Intel VT-x or AMD-V. ?

VMWare ESXi should support Lion and Mountain Lion, both in terms of it having been done and beeing allowed by Apple's license.
Note: Apple's license only allows hosting two virtual OS X machines on a single host.
In addition to ESXi, there is also Parallels Server for Mac Bare Metal Edition. See http://www.parallels.com/uk/products/server/mac/baremetal/technical-resources/ I merely mention it for completeness, I would stick to ESXi since it is 'free'.
You could consider running OS X as the host operating system and Windows as a guest VM using VirtualBox. VirtualBox can be configured to start automatically and invisibly on the Mac host. You could then use Microsoft RDP to connect to the running VM. Its services like SQL Server would of course be running and accessible as normal.

Difficulty with Virtual Named hosts on Web Ser

I am having a difficult time with creating Several Virtual Named Hosts with Apache2. I am trying not to use the Apache Manual modifications to the config file, sothat I can stil manage cia Server Admin. I am running OSX 10.5.2 and have several domains registered . Additionally I have a DNS Server running on the Xserver the primary zone is yadayadayada.com with zone as follows;
yadayadayada.com. Primary Zone
www.yadayadayada.com. ALIAS yadayada.com.
machineyada Machine 74.11.11.11
HomePage Service machineyada.yadayadayada.com:80
I have reverse Zones, and a Secondary zones setup for my DSL Service provider and my Domain host. I have two DSL Lines setup using a Cisco router , the cisco router provides DHCP , and multiplexes the two DSL lines to share bandwidth.
the web is setup as follows;
Domain_Name Address Port
* 80
yadayadayada.com. * 80
yadayadayada1.com * 80
I dont have Realms setup and all other Web config parameters are set as default
my name servers are registered , and have propagated verified by a nslookup. I have them setup to point to the same phydical server using the multiplexed ip adresses i.e.
ns1.yadayadayada.com 74.11.11.11
ns2.yadayadayada.com 74.11.11.12
when I browse to either www.yadayadayada.com or www.yadayadayada1.com I get the default website, when the default web is deactivated i receive server not available .
According to the documentation once you have a unique domain name and a Zone for that domain you should be able to host multiple Named Virtual hosts, however after explicitly following the "Vague" directions I am still not able to get the configuration to return the correct sites. does anyone have any experiance with Virtual Named hosts, or must i resort to the Apache Docs ?
Thanks for the assistance in advance.

Obfuscating the domain name often leads to confusion - for example are errors introduced via typos in the obfuscation?
Given the information that you've posted, your DNS isn't setup correctly.
You're trying to access 'www.yadaydayada.com', but you don't have any 'www' record in your 'yadayadayada.com' zone file. However, since you seem to get a response from the web server clearly you have some kind of additional DNS setup that you're not posting here.
In any case, as far as Apache is concerned, there is no relationship between 'yadayadayada.com' and 'www.yadayadayada.com'. They are two completely different hostnames and I wouldn't expect Apache to serve yadayadayada.com's web site when you're trying to access 'www.yadayadayada.com'. You'll need to either assign a server alias for the other domain, or add an additional Virtual host for 'www.yadayadayada.com' (and make sure the DNS points to the right place, of course).

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