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  • Backup and Recovery

RMAN incremental Backup cumulative and differential

RMAN Incremental backup This backups only datafile blocks changed since specified previous backup. 1.This strategy could be followed to make…

  • ASM

ASM overview and commands

  Automatic Storage Management (ASM) A.Overview of Automatic Storage Management (ASM) Automatic Storage Management (ASM) simplifies administration of Oracle related…

  • Linux

Unix basic command and shell script for DBA and SYSADMIN

DIRECTORY STRUCTURE IN UNIX   Directory Contains bin/ Required Boot-time binaries boot/ Boot configuration files for the OS loader and kernel…

  • Installation

Basic oracle database creation and maintenance in windows and Linux

  DB CREATION STEPS IN WINDOWS SETTING AN ENVIRONMENT(FOR WINDOWS) ORADIM -new -sid <new_sid> -intpwd oracle -startmode AUTO -pfile c:\oracle\admin\<new_sid>\pfile\init<new_sid>.ora…

  • security

Oracle users,roles,audit and security

  MANAGING SECURITY Managing Profiles 1.Creating profile and Granting it to user CONN sys/password AS SYSDBA CREATE PROFILE my_profile LIMIT…

  • MySQL DBA

MySQL Admin

  Install mysql 5.7 in Ubuntu root@ubuntu:~# sudo apt-get install mysql-server Reading package lists... Done Building dependency tree Reading state…

  • ASM

How to add raw disk first in vmware host RHEL 7 from datastore and attach to ASM diskgroup using udev rules and asmca

First Add disk from datastore to the VM server node using following steps Login to vCenter console and Right Click…

  • Dataguard

ORACLE DATA GUARD FOR RAC 12C USING SEPARATE REPLICATION NETWORK

ORACLE DATA GUARD FOR RAC 12C USING SEPERATE REPLICATION NETWORK Table of Contents Revision history   3 1       Environment   4 1.1        …

  • Dataguard

Case Study on Network Bandwidth Calculation in 12c dataguard environment and testing with redo generation rate

Data loading:- create table t(c1 char(2000),c2 char(2000)); insert into t select 'A','B' from dual connect by rownum<1000000; commit; the data…

  • AWS

Lambda to Start EC2 Instances on schedule and send instant public IP over email to multiple recipients using SNS

Following article will describe how to start EC2 Instances on schedule using Lambda and send the public IP  instantly to…