Technical Articles

Technical Oracle Articles

ProC Code Performance Improvement (GCC - RHL)

Performance Improvement in Pro*C

Pro*C code compilation builds executable depends on the parameters passed while compiling a code on Linux OS. GCC compiler is widely used for compilation.

Parameters that it provides enables memory management and linking etc...
This means : Without changing Code GCC compilation parameter change can give significant improvement in performance without impacting functionality. Attached document contents details study of the same.

This document gives details about environment,deployment and pre-post change analysis.

Pro*C Code Performance Improvement (GCC - RHL)

Performance Improvement in Pro*C

Pro*C code compilation builds executable depends on the parameters passed while compiling a code on Linux OS. GCC compiler is widely used for compilation.

Parameters that it provides enables memory management and linking etc...
This means : Without changing Code GCC compilation parameter change can give significant improvement in performance without impacting functionality. Attached document contents details study of the same.

This document gives details about environment,deployment and pre-post change analysis.

Oracle 11g CONVERTING PHYSICAL STANDBY DATABASE TO SNAPSHOT STANDBY DATABASE

CONVERTING PHYSICAL STANDBY DATABASE TO SNAPSHOT STANDBY DATABASE

Step 1: Check if Flashback is enabled. If not, enable in mount state in Physical Standby database

i) SQL> Show parameter db_recovery_file_dest
NAME TYPE VALUE
--------------------------------------------------------------- ----------- ------------------------------
db_recovery_file_dest string u03/oradata/ODSP1/flash_recovery_area/
db_recovery_file_dest_size big integer 2G

Exploring BI Publisher 11g : A simple report with DataModel Editor

If you have installed OBIEE 11g successfully, lets try to explore some of the new features and tools available with BI Publisher 11g.

Unlike 10g, where Report is a single entity and data sets are the part of Report definition, in 11g, Data Sets (which termed as Data Model in 11g) and Report definition are two separate entities.

Oracle Database 11g RMAN Backup Encryption

Security is gaining importance. As per the reports in the year 2008, loss of confidential information has increased to 63%. This loss of confidential information is a breach of Service Level Agreement (SLA). Organizations will have to compensate these loses in the form of financial penalties.

Trasliteration - Conversion of double/triple byte characters to single byte characters for various requirements

I recently came across a document where the requirement was to convert from triple/double byte characters to single byte characters to send it for export complaince check as the export compliance system can accept only single byte characters.
Basically the useful thing about this was they were using IBM ICU project(an open source project) for this process,so in a way making it more open to developers.
These were the pros and cons for IBM identified by them.
Pros
- No interface needed (written in Java, integrable in Oracle)

Heartbeat failed to connect to standby-11g Dataguard

Error:Heartbeat failed to connect to standby Error 12541
By using rdist command, one can copy Oracle's password file from primary site to physical standby site. Even if the SYS password is same on both the servers, you must copy the password file from primary to standby.

Step 1
install rsh-server package on both the servers.

Step 2
#vi /etc/xinetd.d/rlogin
disable=no

Step 3
#service xinetd restart

tlananthu's picture

How to enter a single quotation mark in Oracle?

Answer: Although this may be a undervalued question, I got many a search for my blog with this question. This is where I wanted to address this question elaborately or rather in multiple ways.

A Simple Introduction To XML

XML: XML is an acronym for ‘Extensible Markup Language’. It is used for defining data
elements on a webpage and business to business document. XML uses a similar tag
structure as HTML; however, whereas HTML defines how the elements are displayed,
XML defines what those elements contain. While HTML uses predefined tags, XML allows
tags to be defined by developer of the page.

Mohammad taj's picture

Manually DB Creation with 11G

Manually database creation is one of the more frequently performed actions of a professional DBA. And, with Oracle 11g it only takes a few minutes to do :)

The procedure is same as previous which we are used for 9i and 10g.

In this database creation I used below features:

1. OMF (Oracle Managed File) for datafiles, redolog files & controlfiles
2. FRA (Flash Recovery Area) for Archivelog or backup files
3. ASM (Automatic Storage Mgmt) for Volume manager

1. Create Required Directories

E:\>mkdir e:\oracle\ORA11G

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