Hi,
In Linux and Unix the default buffer pool size is 1,000 4K pages. And in Windows it 250 4K pages in size.

This means in Linux / Unix the buffer pool size is 4Meg and in windows it is just 1Meg.

My questions.

1. I would think these sizes seem very small. Why are they so small?
2. Why is the default size for Windows so much smaller than Linux / Unix?

Many thanks.

These are the defaults going all the way back to 1990 with very first release of DB2 on OS/2 OS (and later AIX and Windows). Servers were not very big then.

Now the default is -2, which means it will be managed by STMM. You can google STMM to find out what that is about.