WiredTiger: A game changer for MongoDB

Storage engine is one of the key component of any database.  It is, in fact, a software module which is used by database management system to perform all storage related operations e.g. create information, read information and update any information.  The term storage means both disk storage and memory storage.   Choosing right storage engine is Read more about WiredTiger: A game changer for MongoDB[…]

Data Pump: impdp

Problem Statement: Restore entire database using Data Pump. Restore table(s) Restore tablespace(s) Restore schema(s) Restore using Transportable tablespaces (TTS) Restore from multiple small sizes of dump files Restore in parallel mode Approach: There are single shot solution to all the above problem statement and it is IMPDP in Data Pump.  It is one of various Read more about Data Pump: impdp[…]

Data Pump: expdp & impdp

Problem Statement: Backup entire database using Data Pump. Backup table(s) Backup tablespace(s) Backup schema(s) Backup using Transportable tablespaces (TTS) Generate multiple small sizes of dump files Backup in parallel mode Approach: There are single shot solution to all the above problem statement and it is Data Pump.  It is one of various backup tools provided Read more about Data Pump: expdp & impdp[…]

MongoDB Installation – Ubuntu

MongoDB is one of the document oriented open source database developed in c++, first come into shape in 2007 when in order to overcome the shortfall of existing database while working for an advertising company “DoubleClick” development team has decided to go further rather than struggling with database.  The team of this advertising company was Read more about MongoDB Installation – Ubuntu[…]

How to copy Multi terabyte data to another Database

Problem statement:  How to migrate huge data from One DB to another DB. Multi-Terabyte data loaded on one database should be copied to another database. Environment: You have multi-terabyte Database Your database is growing on daily basis, based on data feeds. Number of Indexes on these tables are very high, and thus, size of indexes Read more about How to copy Multi terabyte data to another Database[…]

MapReduce Unwinding … Reduce