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 created.SQL> TEXT DATATYPE EXPLAINED SQL> select vsize(sal) […]
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))); l_decrypted_raw := dbms_crypto.decrypt(src => l_encrypted_raw, typ => dbms_crypto.des_cbc_pkcs5, key => […]
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 Instance(s): EBILPD11 EBILPD12 Database Status: SUCCESS DGMGRL> show […]
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 with minimal expense or complexity compared to other extended distance […]
#!/bin/bash . /home/oracle/.bash_profile export log=/u01/app/oracle/shells/clean_rdbms_audit.log echo $ORACLE_HOME | tee $log echo “DELETING AUDIT LOGS FROM RDBMS” | tee -a $log date | tee -a $log df -m $ORACLE_HOME | tee -a $log /bin/find /u01/app/oracle/ -type f -name “*.trc” -mtime +1 -exec rm {} \; find $ORACLE_BASE/admin -type f -name “*.aud” -mtime +5 -exec rm {} \; find $ORACLE_BASE/diag/rdbms -type f […]
This script will show tablespaces from all databases in server which are full by 85 percent.This script will take care autoextend on clause.This means it will show tablespace usage if growth is exceeding autoextended space. 1.The shell script:- for j in ORCL1 ORCL2 do export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=/u01/app/oracle/product/12.1.0/db_1 export ORACLE_SID=$i #$ORACLE_HOME/bin/sqlplus -S monitor/m0n1t0r@”$j” << EOF >> tb_check_all_`date +\%d\%m\%Y\%H`.log $ORACLE_HOME/bin/sqlplus -S […]
1.First create the shell script mentioning all environmental variables adjusted to your environment. vi dataguard_dr_sync_check.sh #!/bin/bash cd /u01/app/oracle/shells for k in ORCL do export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=/u01/app/oracle/product/12.1.0/db_1 export ORACLE_SID=$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 4 nodes,just add another 2 sql with thread and union […]
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 To be able to recover changes to objects created with […]
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 Files (OMF) functionality that also includes striping and mirroring to […]
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 point to connect devices to proc/ Pseudo directory structure containing […]