Keep history of Oracle Source code in DB

You can build a history of PL/SQL code changes by setting up an AFTER CREATE schema (or database) level trigger. This will allow you to easily revert to previous code if required.

Big Data: Working with Oracle NoSQL (KVLite)

KVLite is a single-node, single Replication Group store. It usually runs in a single process and is used to develop and test client applications. KVLite is installed when you install Oracle NoSQL Database.

Big Data: Oracle NoSQL Database - Intro

"A DBA walks into a NOSQL bar, but turns and leaves because he couldn't find a table"

Oracle NoSQL Database provides multi-terabyte distributed key/value pair storage that offers scalable throughput and performance.

Big Data: A Brief Intro

Definition

"Big data" is a term applied to data sets whose size is beyond the ability of commonly used software tools to capture, manage, and process the data within a tolerable elapsed time. Big data sizes are a constantly moving target, as of 2012 ranging from a few dozen terabytes to many petabytes of data in a single data set.

Scheduling Jobs with Oracle Scheduler

You operate Oracle Scheduler by creating and managing a set of Scheduler objects. Each Scheduler object is a complete database schema object of the form[schema.]name

Job
A job is the combination of a schedule and a program, along with any additional arguments required by the program.

Managing Automated Maintenance Tasks

Automated maintenance tasks are tasks that are started automatically at regular intervals to perform maintenance operations on the database. These tasks run automatically by the database and are executed during the "maintenance window" which is a contiguous time interval during which automated maintenance tasks are run under.

Kill The Running Job in Oracle

Some times it becomes necessary to kill the ongoing running Oracle job. I faced a situation when there was "enq: TX - row lock contention" and job was continuously running.

Oracle Proxy User

A proxy user is a user that is allowed to "connect on behalf of another user"

Backup and Restore using AVAMAR

Brief:
The Avamar Plug-in for Oracle works with Oracle and Oracle Recovery Manager (RMAN) to
back up an Oracle database, a tablespace, or datafiles to an Avamar server.

Creating duplicate database using rman backup 11gR2 (Single instnace)

Scenerio:
Duplication required for a single instance database (11gR2) on the same server. OS environment Windows 64bit.

Restoring RMAN backup to new server

Scenerio:
RMAN backup has been taken on the production server and now it is required to restore it on the new fresh server. OS environment is Windows 64bit. Source system was on RAC 11gR2 and Destination was 11gR2 Single instance.

Scheduling RMAN Batch job for backup

Scenerio:

To take the RMAN backup by OS scheduled job (on Windows)

Deleting obsolete rman backup information from controlfile

Scenario:
We took database backup disk including controlfile from production server to refresh a staging server for application testing purpose. On production server TAPE (Netbackup) already configured. After copying the RMAN backup files to Stage DB Server, upon restore when we checked database backups it was showing the TAPE backups also. So we deleted the backups.

ORA-01031 insufficient privileges

Developer was getting "ORA-01031: insufficient privileges" error while updating a table even though the user had proper privileges already. Complete scenario is given below 

A Quick Intro to GIS - Part I

What is GIS
GIS stands for geographic information system. It is an integrated system used to display, store, manage and analyze data about objects on earth. It is used to perform a variety of functions on geographic information.

ORA-01152: file 1 was not restored from a sufficiently old backup

Scenerio: After restring and recovering database got ORA-01152 while opening the database with resetlogs. Backup was taken without taking the archive logs. Perform the following:

RMAN: Taking Cold backup using RMAN and restore it

Cold backup is particular useful when you plan to test some changes on the database and in case something goes wrong you can always fall back to this Cold backup.

Cold backup is a consistent backup when the database has been shutdown immediate or Shutdown Normal.If the database is shutdown with abort option then its not a consistent backup.

Cold backup can be taken by RMAN in mount stage after database has been shutdown immediate.

RMAN: Recovery of missing datafile that is never backed up

Environment:
Oracle Database 11gR2 on Windows 7
DB in archivelog mode

Example:
Assuming that already a tablespace "TS1" is existing with one datafile, if not you can use the statements below.
 create tablespace ts1 datafile 'C:\app\Inam\oradata\orcl\ts01.dbf' size 10m reuse;

Using Transportable Tablespaces

Oracle transportable tablespaces are the fastest way for moving large volumes of data between two Oracle databases. Using transportable tablespaces, Oracle data files (containing table data, indexes, and almost every other Oracle database object) can be directly transported from one database to another. Furthermore, like import and export, transportable tablespaces provide a mechanism for transporting metadata in addition to transporting data.

RMAN: Recover A Dropped Tablespace Using TSPITR (11gR2)

RMAN automatic Tablespace Point-In-Time Recovery ( TSPITR) enables you to quickly recover one or more tablespaces in an Oracle database to an earlier time, without affecting the state of the rest of the tablespaces and other objects in the database.