Ever have someone perform a chmod 777 .*, chown -R *, etc… here is how to fix it without reinstalling or restoring from tape. You do need root access either locally or remotely.
Almost all packages installed on a Solaris machine have their settings kept in one file. It is /var/sadm/install/contents.
Root# cd /var/sadm/install
you will find a file named contents, where this contains the original installation file permissions which is used during OS installation. Continue Reading»
The RMAN Environment
There are 9 RMAN components available out of 2 components are required for performing backup and recovery.
List of Components
Target Database
The control files, datafiles, and optional archived redo logs that RMAN is in charge of backing
up or restoring. RMAN uses the target database control file to gather metadata about the
Continue Reading»
Disk mirroring in Solaris
Install the OS in one hard disk, and put the second one before turning on the Server.
Now go to the root and type format, it will list you the hard disk Number.
(i.e) c2t0d0 (Primary hard disk – with partition info) and c2t1d0 (secondary disk)
Normally the entire hard disk will be denoted as c2t0d0s2 ( S2 indicates the entire slice)
To transfer the partition information from primary hard disk to Secondary Continue Reading»
VERITAS CLUSTER FUNDAMENTALS
- Cluster Definition
- Cluster Setup
- VCS and Its Advantages
- Disadvantages of VCS
- Hardware Setup and Requirments
- VCS Communication
- GAB
- LLT
- I/O Fencing
- HAD
- Sample DataCenter Setup
- Oracle Service Group
- VCS AGENT
- Veritas Cluster Commands
Continue Reading»
SETTING UP YOUR CA
Step 1:
Go to http://www.slproweb.com/download/Win32OpenSSL-0_9_8e.exe and download openssl for windows.
Step 2:
Create directories to hold your CA keys, your server keys and, if you want to use SSL client authentication, your client keys. For the sake of argument let’s assume that these directories are called “C:/ssl/TomcatCA”, “C:/ssl/TomcatServer” and “C:/ssl/TomcatClient”. Continue Reading»
I had struggled in the earlier to get the information about oracle certification. Even oracle provide this info, I search and figure it out. Couple of my friends were keep on asking me how to apply, terms and so many informations about certification.
I keep on telling them the following informations. So I decided to post all the informations in one place and tell them the reference. Here it is. Ya! I know this is very basic information, but I got bored to tell each time.
Advantages of Oracle Certification
An Oracle database certification equips individuals to install, maintain, troubleshoot, and fine-tune all aspects of an Oracle database. Continue Reading»
This post you can find 3 useful links for Oracle 11g.
Very first you can find all the new features about Oracle 11g, next is installations steps and finally you can get the download link.
Oracle 11g New FeaturesOracle enhances its features in version by version. what’s hot?
Many new change assurance features in Oracle database 11g bring that dream closer to reality. Oracle Database 11g makes database infrastructure far more efficient, resilient, and manageable.
Check out the New Features
Continue Reading»
Brief of Incremental Backup
RMAN incremental backup option backs up blocks that have changed since the last incremental backup at the same level or below. For instance, a full backup (level_0) is taken on day 1 and two incrementals of level_1 are taken on days 2 and 3. The latter two merely back up the changed blocks between days 1 and 2 and days 2 and 3, not across the entire backup time. This strategy reduces backup size, requiring less space,
and narrows the backup window, reducing the amount of data moving across the network
In Oracle 9i and below, while doing incremental backup RMAN scans all the data blocks to identify changed
block for backup. This process puts so much stress on the system that doing incrementals becomes impractical. Continue Reading»
egrep Multiple Pattern Search
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Example:
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Requirement : Find the root and oracle users informations from /etc/passwd
[root@tritya root]# egrep ‘root|oracle ‘ /etc/passwd
root:x:0:0:root:/root:/bin/bash
oracle:x:300:200:oracle:/home/oracle:/bin/bash
[root@tritya root]#
ORACLE SILENT MODE INSTALLATION
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You can automate the installation and configuration of Oracle software, either fully or partially, by specifying a response file when you start the Oracle Universal Installer. The Installer uses the values contained in the response file to provide answers to some or all of the Installer prompts:
If you include responses for all of the prompts in the response file and specify the -silent option when starting the Installer, then the Installer runs in silent mode. During a silent-mode installation, the Installer does not display any screens. Instead, it displays progress information in the terminal that you used to start it. Continue Reading»
