Friday, August 5, 2011

BI Applications: Resetting the password for SYS User

BI Applications: Resetting the password for SYS User: "Many times we tend to forget the password of the SYS user. In such cases log onto the machine which hosts the DB server and connect as SYSD..."

Friday, April 1, 2011

BI Applications: DB links and Getting DDL from sqlplus

BI Applications: DB links and Getting DDL from sqlplus: "DB link create Syntax - CREATE DATABASE LINK dblink_name CONNECT TO user IDENTIFIED BY pwd USING '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP..."

Wednesday, March 23, 2011

BI Applications: UNSPSC

BI Applications: UNSPSC: "To be frank I had thought UNSPSC to be Unspecified. Later I realized its a standard or a convention used to classify all products and servic..."

Monday, March 14, 2011

BI Applications: Overrides in Informatica

BI Applications: Overrides in Informatica: "Few points regarding overrides in INFA - Source Qualifier Override - 1. The number of columns in the SQ query should match with the numbe..."

Tuesday, January 18, 2011

BI Applications: Configuring INFA Connections in DAC

BI Applications: Configuring INFA Connections in DAC: "Configuring the physical connections can be quiet daunting for Informatica DW server and REP server. First - Provide all the details in Set..."

Friday, December 31, 2010

BI Applications: Privileges within a PLSQL procedure

BI Applications: Privileges within a PLSQL procedure: "Oracle expects that we mention explicitly what kind of privileges the PLSQL procedure has. If we do not specify it properly there are chance..."

BI Applications: Accessing Table Names of other Schemas

BI Applications: Accessing Table Names of other Schemas: "Many times we would want to select the table names from another schema. In such cases below SELECT would help.. select TABLE_NAME FROM ALL_..."

Thursday, December 2, 2010

BI Applications: Database Character Set of a DB

BI Applications: Database Character Set of a DB: "This query will help in finding the database character set of an oracle db. Select value from SYS.NLS_DATABASE_PARAMETERS where PARAMETER =..."

Monday, November 15, 2010

BI Applications: Difference Between COALESCE and NVL

BI Applications: Difference Between COALESCE and NVL: "COALESCE and NVL are used to achieve the same functionality of providing a default value in case the column returns a NULL. The differences..."

Monday, September 13, 2010

BI Applications: Rows to columns and Columns to Rows in Oracle

BI Applications: Rows to columns and Columns to Rows in Oracle: "Many a times we need to display data in different ways. Multiple rows in table need to be displayed as columns and vice-verse. The below li..."

BI Applications: TO_CHAR(date column) returns zero

BI Applications: TO_CHAR(date column) returns zero: "In Oracle Database we face this issue sometimes. We see that Date field contains all zeros Example - select to_char(Date_column,'dd-mm-yyyy ..."