The formatting problem is with the forum software. The easy workaround is to go into the advanced editor and set a fixed font like courier new. I'm sure there are also ways to mess with html.
Please search in the oracle documentation first. Almost all is answered in the docs already,
Oh aman .. thanks a lot !!
Granule - Oracle FAQ : i think here also explained.
Later releases it is typically 4MB if your SGA is smaller than 1GB and 16MB if your SGA is bigger
Thanks & Regards
GTS ( ASIA PACIFIC)
My suggestion to you that instead of reading things from non-oracle sources, read Oracle documentation . It's free and 9/10 times, correct than external sources of information.