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    ORASOA side:   create table tab1(c1 char(10),c2 char(10),c3 char(10));   begin for i in 1..10000 loop insert into tab1 values(i,’A’,’B’); end loop; end;   alter table tab1 add constraint pk_tab1 primary key(c1);   create materialized view log on tab1;—– Default is Primary Key   SQL> select * from… Continue Reading Materialized View Example

CREATING ORACLE DATABASE OBJECTS CREATING TEMPORARY TABLES   SQL>CREATE GLOBAL TEMPORARY TABLE TEMP_EMP (EMPNO NUMBER,ENAME VARCHAR2(10))   CREATING ONE TABLE WITH DATA FROM ANOTHER   SQL> create table emp_copy(empno,sal) as select empno,sal from emp;   SQL> CREATE TABLE employee_new   2 AS SELECT * FROM employees   3 PARALLEL DEGREE 4   4*NOLOGGING; Table… Continue Reading All about table and constraints in Oracle

SQL> CONN SYS/SYS AS SYSDBA Connected. SQL> set serveroutput on SQL> SQL> set linesize 121 SQL> SQL> DECLARE l_credit_card_no VARCHAR2(19) := ‘1234-5678-9012-3456’; l_ccn_raw RAW(128) := utl_raw.cast_to_raw(l_credit_card_no); l_key RAW(128) := utl_raw.cast_to_raw(‘abcdefgh’); l_encrypted_raw RAW(2048); l_decrypted_raw RAW(2048); BEGIN dbms_output.put_line(‘Original : ‘ || l_credit_card_no); l_encrypted_raw := dbms_crypto.encrypt(l_ccn_raw, dbms_crypto.des_cbc_pkcs5, l_key); dbms_output.put_line(‘Encrypted : ‘ || RAWTOHEX(utl_raw.cast_to_raw(l_encrypted_raw)));… Continue Reading DBMS_CRYPTO example

FAST START FAILOVER (FSFO) CONFIGURATION USING  FAR SYNC NODE AS OBSERVER IN DATAGUARD USING DGMGRL   1.For data guard DGMGRL configuration and Far Sync setup please follow below link:- http://clouddba.co/step-step-oracle-active-data-guard-far-sync-rac/   2.Please check current database status DGMGRL> show database  ebilpd1;   Database – ebilpd1   Role:               PRIMARY Intended State:     TRANSPORT-ON… Continue Reading FAST START FAILOVER (FSFO) CONFIGURATION USING FAR SYNC NODE AS OBSERVER IN DATAGUARD USING DGMGRL

     Step by Step Oracle Active Data Guard Far Sync RAC Active Data Guard Far Sync, a new capability with Oracle Database 12c, eliminates compromise by extending zero data loss protection to a replica database located at any distance from the primary database. Active Data Guard Far Sync accomplishes this… Continue Reading Step by Step Oracle Active Data Guard Far Sync RAC

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

  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