Bad idea to shrink SHARED_POOL_SIZE dynamically?

Environment: Oracle 9.2.0.1 on Solaris 8

Is it a bad idea to shrink SHARED_POOL_SIZE from 300MB to 200M using

ALTER SYSTEM SET SHARED_POOL_SIZE=200M SCOPE=BOTH?

It's been taking 15 mins since I issued the command and I am still waiting for the return prompt.

I notice the checkpoint process has been pretty busy with consistent 50% CPU usage. Does it essentially flush the shared pool and allocate it?

BTW, I do this because I have to increase JAVA_POOL_SIZE significantly (thus reduce SHARED_POOL_SIZE temporarily) in order to accomodate the 9.2.0.4 patch's requirement for JAVA_POOL_SIZE > 150M.

Thanks

I guess Oracle will flush shared_pool but even then it shouldn't take that long.
I haven't yet applied 9.2.0.4 patchset.

Hi.

Every time I've attempted to shrink the shared pool it's taken an absolute age. It's still alot quicker to bounce the instance if you can.

Cheers