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Cassandra for Oracle DBA’s Part 4 – Data Distribution across Nodes

Shared Disk architecture in RAC where the data is shared across the nodes and at any point of time , every instance will give the same data using cache fusion.

But in Cassandra, the important part is storage is not shared storage, instead its sharded means partitioned and stored in each node.

And when […]

July 25th, 2016 | Tags: , , , | Category: Cassandra | Comments are closed

Cassandra for Oracle DBA’s Part 3 – Architecture

In Oracle (infact for any RDBMS) , will have a memory structures and processes (or thread) to process the data.

If we take Oracle as an example, lets look the similarities

1. Memory Architecture

Oracle Cassandra (NO-SQL DB) Parameter to Set in Cassandra.yaml file Comments SGA Java Heap Memory

cassandraenv.sh

MAX_HEAP_SIZE

SGA is […]

July 20th, 2016 | Tags: , , | Category: Cassandra | Comments are closed

Cassandra for Oracle DBA’s – Part 1 : Nomenclature or Commands or Features Comparision

Although, there are heaps of fundamental changes between Oracle & Cassandra,

Just for fun, or for nomenclature or for commands or similar features are listed here , which may provide handy information to Oracle DBA’s

Oracle Keyword Cassandra Feature / Nomenclature SGA Java Heap Memory Buffer Cache Memtables LRU List Parition Index Summary Cache […]

July 19th, 2016 | Tags: , , , | Category: Cassandra | 6 comments - (Comments are closed)