This script will show  tablespaces from all databases in server which are full by 85 percent.This script will take care autoextend on clause.This means it will show tablespace usage if growth is exceeding autoextended space. 1.The shell script:- for j in ORCL1 ORCL2 do export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=/u01/app/oracle/product/12.1.0/db_1 export ORACLE_SID=$i… Continue Reading Tablespace usage considering autoextend on

1.First create the shell script mentioning all environmental variables adjusted to your environment. vi dataguard_dr_sync_check.sh #!/bin/bash cd /u01/app/oracle/shells for k in ORCL do export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=/u01/app/oracle/product/12.1.0/db_1 export ORACLE_SID=$k $ORACLE_HOME/bin/sqlplus -S monitor@”$k”/xxx << EOF >> dataguard_dr_sync_check_orcl_`date +\%d\%m\%Y\%H`.log @dataguard_dr_sync_check_orcl.sql exit EOF done 2.For 2 node RAC,below will be dataguard_dr_sync_check_orcl.sql script .For… Continue Reading Script to sync check of applied archive log between 2 RAC databases

RMAN Incremental backup This backups only datafile blocks changed since specified previous backup. 1.This strategy could be followed to make incrementally updated backup .These incrementally updated backup will be used to make updated image copy will all roll forward image. 2.Reduce amount of time to take backup. 3.Save network bandwidth… Continue Reading RMAN incremental Backup cumulative and differential

  Automatic Storage Management (ASM) A.Overview of Automatic Storage Management (ASM) Automatic Storage Management (ASM) simplifies administration of Oracle related files by allowing the administrator to reference disk groups rather than individual disks and files, which are managed by ASM. The ASM functionality is an extention of the Oracle Managed… Continue Reading ASM overview and commands

DIRECTORY STRUCTURE IN UNIX   Directory Contains bin/ Required Boot-time binaries boot/ Boot configuration files for the OS loader and kernel image dev/ Device files etc/ System configuration files and scripts home/ User/Sub branch directories lib/ Main OS shared libraries and kernel modules Lost+found/ Storage directory for “recovered” files mnt/ Temporary… Continue Reading Unix basic command and shell script for DBA and SYSADMIN

  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   PASSWORD FILE MANAGEMENT   Check in the initclone.ora REMOTE_LOGIN_PASSWORDFILE is set to    exclusive or shared.  If this is set, then a valid passwordfile should exist in ORACLE_HOME/dbs or created… Continue Reading Basic oracle database creation and maintenance in windows and Linux

  MANAGING SECURITY Managing Profiles 1.Creating profile and Granting it to user CONN sys/password AS SYSDBA CREATE PROFILE my_profile LIMIT FAILED_LOGIN_ATTEMPTS 3  — Account locked after 3 failed logins. PASSWORD_LOCK_TIME 5     — Number of days account is locked for. UNLIMITED required explicit unlock by DBA. PASSWORD_LIFE_TIME 30    — Password expires… Continue Reading Oracle users,roles,audit and security

  Install mysql 5.7 in Ubuntu root@ubuntu:~# sudo apt-get install mysql-server Reading package lists… Done Building dependency tree Reading state information… Done The following additional packages will be installed:  libaio1 libhtml-template-perl mysql-client-5.7 mysql-client-core-5.7  mysql-common mysql-server-5.7 mysql-server-core-5.7 Suggested packages:  libipc-sharedcache-perl mailx tinyca The following NEW packages will be installed:  libaio1 libhtml-template-perl… Continue Reading MySQL Admin

First Add disk from datastore to the VM server node using following steps Login to vCenter console and Right Click Server -> Edit Settings. Click Add and add a New Disk Create a new virtual disk. Provide capacity and all related setting. Also specify the Datastore.   Select proper settings… Continue Reading How to add raw disk first in vmware host RHEL 7 from datastore and attach to ASM diskgroup using udev rules and asmca

ORACLE DATA GUARD FOR RAC 12C USING SEPERATE REPLICATION NETWORK Table of Contents Revision history   3 1       Environment   4 1.1         Hardware  4 1.2         Software  4 1.3         Networking  4 1.3.1      Primary Site  4 1.3.2      Disaster recovery Site  5 1.4         LISTENER_DG both for primary and standby  5 1.4.1      Listener Configuration Kolkata1  10… Continue Reading ORACLE DATA GUARD FOR RAC 12C USING SEPARATE REPLICATION NETWORK