One of my web application using IIS report an error like:
System.Exception: OCIEnvCreate failed with return code -1 but error message text was not available
Reason:
It means Asp.net does not have correct permissions in the Oracle home folder including full control and also run aspnet_regiis it is in the .NET 2.0 folder of the virtual machine.
Solution:
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i
Posted in
Oracle at June 23rd, 2014.
No Comments.
In this test, I try to install freenas for a trial. The environment is VMware, I create a virtual machine with 1G memory, and 3 HD (1 for freenas, 2 for data), that is enough for fressnas installation.
Download freenas iso from http://www.freenas.org
And let’s start the installation
Read More…
Posted in
FreeNAS at December 24th, 2013.
No Comments.
Created on Sep 25, 2013
Environment:
VMware vSphere 5.1
HP P2000G3 iSCSI
1. Download vSphere Data Protection from vmware web site
There are 3 kinds of ova files for downloading depend on the volume size of storage:
0.5TB
1TB
2TB
For this guide, we use 0.5TB Backup Data Store.
Recommendations:
Read More…
Posted in
VMware at October 8th, 2013.
No Comments.
Created on Sep 24, 2013
Environment:
Windows 2008 R2
Backup Exec 12.5 for Windows Servers
Backup Exec report an error “Unknown CORBA exception. Unable to contact the media server. Confirm that the Backup Exec Job Engine service is running on the media server” during the backup.
There is an official doc of Symantec to solve this problem. Especially for Windows 2008.
http://www.symantec.com/business/support/index?page=content&pmv=print&impressions=&viewlocale=zh_CN&id=TECH58180
For my environment, the root cause is IPV6, stop IPV6, this problem is solved, which has been described in the Symantec doc.
Posted in
Backup Exec at September 25th, 2013.
No Comments.
1. Install Adobe YUM Repository RPM package(run as root)
for 32bit
rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpm
rpm –import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
for 64bit
rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm
rpm –import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux
2. Update Repositories
yum check-update
3. Install Adobe Flash Player 11.2
yum install flash-plugin nspluginwrapper alsa-plugins-pulseaudio libcurl
4. Verify that the Flash Player Plugin is working
type about:plugins in firefox address bar
Posted in
Linux at August 27th, 2013.
1 Comment.
Environment:
VMware vSphere 5.1
HP P2000G3 iSCSI
After change a LUN mapping of my HP P2000G3 iSCSI storage, the Vmware vSphere 5.1 has problems. All virtual servers with status powered on look good but servers with status powered off are unknow and inaccessable.
Read More…
Posted in
VMware at August 15th, 2013.
No Comments.
Environment:
VMware vSphere 5.1
HP P2000G3 iSCSI
1. Add VMKernel Port
Home–>Hosts and Clusters–>Configuration–>Networking
Add 2 VMKernel ports to a vSwitch(no vSwitch, create one), connect with 2 physical network adapters.
Name these 2 ports as your wish, but I recommend iscsi0 & iscsi1.
Enable vMotion for these 2 VMKernal ports, and set IP for them.
Read More…
Posted in
Storage,
VMware at August 14th, 2013.
No Comments.
There is a simple way to test the power of Linux
wget https://acelnmp.googlecode.com/files/unixbench-4.1.0-wht.tar.gz
gunzip -dvc unixbench-4.1.0-wht.tar.gz | tar xvf -
cd unixbench-4.1.0-wht-2
make
./Run
Here is my VPS result
TEST BASELINE RESULT INDEX
Dhrystone 2 using register variables 376783.7 5581936.5 148.1
Double-Precision Whetstone 83.1 1274.8 153.4
Execl Throughput 188.3 3179.5 168.9
File Copy 1024 bufsize 2000 maxblocks 2672.0 112729.0 421.9
File Copy 256 bufsize 500 maxblocks 1077.0 30939.0 287.3
File Read 4096 bufsize 8000 maxblocks 15382.0 706924.0 459.6
Pipe-based Context Switching 15448.6 233794.0 151.3
Pipe Throughput 111814.6 721127.3 64.5
Process Creation 569.3 11468.2 201.4
Shell Scripts (8 concurrent) 44.8 656.8 146.6
System Call Overhead 114433.5 621463.6 54.3
=========
FINAL SCORE 169.6
Posted in
Linux at August 9th, 2013.
No Comments.
I received 2 books today, one is “Expert Oracle Database Architecture” , a great book from a oracle master Thomas Kyte, I have read this book’s previous version about 9i/10g , thanks to this book, I really get more about oracle internals, and this time, he adds some contents about 11g. So it is necessary for me to read it again. This book is not for fresh man, you should know some basic knowhow about oracle.
Another is “Expert Oracle Database 11g Administration” from Sam R. Alapati, who writes oracle’s OCP exam book. More than 1000 pages, looks like it will cost a lot of my spare time
Links below from Amazon, if you need, by yourself.
Expert Oracle Database Architecture: Oracle Database 9i, 10g, and 11g Programming Techniques and Solutions
Expert Oracle Database 11g Administration (Expert’s Voice in Oracle)
Created on Aug 7, 2013
Environment:
Oracle:
Oracle 11g Release 2 11.2.0.3
OS:
Oracle Linux 6 U3
1. On Primary
1.1. Modify /etc/hosts
10.172.10.160 dgp dgp
10.172.10.161 dgs dgs
1.2. Make database force logging
alter database force logging; Read More…
Posted in
data guard,
Oracle at August 8th, 2013.
No Comments.
