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Export and Import using all parameters: 1.SOURCE_EDITION Parameter SQL> show userUSER is “SYS”SQL> GRANT CREATE ANY EDITION, DROP ANY EDITION to remo;Grant succeeded.SQL> alter user remo enable editions;User altered.SQL> grant create any view to remo;Grant succeeded.SQL> select USERNAME,EDITIONS_ENABLED from dba_users where USERNAME=’REMO’; USERNAME E-REMOYSQL> col USERNAME for a10SQL> / USERNAME E REMO YSQL> conn remo/remoConnected.SQL> […]

High Water Mark management in Oracle Database: Description: ⦁ Each table is made up of extents and each extent is made up of oracle blocks – a common block size is 8k. So you have a table with 10 extents (80K). ⦁ When any table creates the high water mark will be in the ‘starting’ position. The high water mark keep moving forward […]

Table Partition: SQL>select * from user_part_tables; SQL>select * from user_tab_partitions; SQL> select table_name,table_owner,partition_name,subpartition_count from dba_tab_partitions where table_name='<table_name>’; Oracle you can partition a table by CREATING PARTITION TABLES 1)Range Partitioning:  This type of partitioning is useful when dealing with data that has logical ranges into which it can be distributed;for example, value of year. Performance is […]

PostgreSQL is an free open-source database system that supports both relational (SQL) and non-relational (JSON) queries. PostgreSQL is a back-end database for dynamic websites and web applications. PostgreSQL supports the most important programming languages: Python.

Oracle Cloud Infrastructure launched in October 2016 with a single region and core services across compute, storage,and networking. Since then, Oracle Cloud has expanded to more than 70 services available in 29 cloud regionsworldwide with plans to reach 38 total regions by the end of 2021. OCI offers relational, OLAP, JSON, and NoSQLdatabases, containers, Kubernetes, […]

Step1:Create tablespace and Expdp: SQL> select table_name,tablespace_name from dba_tables where table_name=’BK’; TABLE_NAME ——————————————————————————– TABLESPACE_NAME —————————— BK INBA SQL> select name from v$datafile; NAME ——————————————————————————– /u01/app/oracle/oradata/ORCL/datafile/o1_mf_system_h1lpjm44_.dbf /u01/app/oracle/oradata/ORCL/datafile/o1_mf_sysaux_h1lpl0nb_.dbf /u01/app/oracle/oradata/ORCL/datafile/o1_mf_undotbs1_h1lplsxv_.dbf /u01/app/oracle/oradata/ORCL/datafile/inba01.dbf /u01/app/oracle/oradata/ORCL/datafile/o1_mf_users_h1lplv5f_.dbf SQL> alter user remo default tablespace inba; User altered. SQL> conn remo/remo Connected. SQL> select * from bb;                ID ———-                22                23                […]

Explain Oracle Architecture?Oracle Instance:a means to access an Oracle database,always opens one and only one database and consists of memory structures and background process.Oracle server:a DBMS that provides an open, comprehensive, integrated approach to information management,Consists of an Instance and a database.Oracle database:a collection of data that is treated as a unit,Consists of Datafiles, Control […]

Step1:To create user and table: SQL> conn remo/remo Connected. SQL> select count(*) from emp;   COUNT(*) ———-                 4 SQL> host Step2:Create Directory and grant permission: SQL>create directory dir as ‘/u01/exportfile’; SQL>grant exp_full_database,imp_full_database to sys,system,remo; SQL> grant read,write on directory dir to sys,system,remo; Grant succeeded. Step3:Export the Dumpfile: [oracle@trichy u01]$ expdp directory=dir dumpfile=bkp_remo.dmp log=bkp_remo.log owner=’REMO’ […]

Stage-4 Performing a Oracle Data Guard Switchover Using DGMGRL Step1:-Check the Primary Database Check both side select name,open_mode,database_role,protection_level from v$database; Standby side SELECT ARCH.THREAD# “Thread”, ARCH.SEQUENCE# “Last Sequence Received”, APPL.SEQUENCE# “Last Sequence Applied”, (ARCH.SEQUENCE# – APPL.SEQUENCE#) “Difference”FROM(SELECT THREAD# ,SEQUENCE# FROM V$ARCHIVED_LOG WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$ARCHIVED_LOG GROUP BY THREAD#)) ARCH,(SELECT THREAD# ,SEQUENCE# […]

Stage-1 How to Create a Physical Standby Database using Backup PiecesHigh Level Steps Goal : How to Create Physical Standby Database using RMAN Backup With Duplicate Command SQL> startupORACLE instance started.Total System Global Area 2432696320 bytesFixed Size 8623592 bytesVariable Size 654314008 bytesDatabase Buffers 1761607680 bytesRedo Buffers 8151040 bytesDatabase mounted.Database opened. SQL> alter database force logging; […]