Originally posted by Sharma
What factor needs to be considerd in detemining LARGE_POOL_SIZE.

I am using RMAN for Backup and Shared Server process (Multi Threaded Architecture).
There is a formula suggested by Oracle:

LARGE_POOL_SIZE = (4 * {RMAN Channels} * {DB_BLOCK_SIZE} * {DB_DIRECT_IO_COUNT} * {Multiplexing Level}) + (4 * {RMAN Channels} * {Tape Buffer Size})

In real life, 20-100M will do the job. I use RMAN and set it to 32M :-)