Most probably I didn`t check all documentation yet, but if anybody could help me with this it will be nice:

I`m trying to increase a buffer pool and getting this message:

The following error has occurred:

ORA-02097: parameter cannot be modified because specified value is invalid
ORA-00384: Insufficient memory to grow cache

In alert.log:

ALTER SYSTEM SET db_cache_size='57108864' SCOPE=MEMORY;
Mon Apr 1 09:43:44 2002
CKPT: Begin resize of buffer pool 3 (DEFAULT for block size 8192)
CKPT: Current size = 64 MB, Target size = 64 MB
CKPT: Size unchanged for buffer pool DEFAULT for blocksize 8192
Mon Apr 1 09:43:44 2002
ALTER SYSTEM SET db_cache_size='67108864' SCOPE=MEMORY;
Mon Apr 1 09:48:22 2002
CKPT: Begin resize of buffer pool 3 (DEFAULT for block size 8192)
CKPT: Current size = 64 MB, Target size = 96 MB
CKPT: Could not allocate memory for
buffer pool DEFAULT, blocksize 8192

As you see - it works for less size but doesn`t work for bigger size - so, is it permitted or what is the problem about it?
OS - sun sparc solaris, oracle 9.0.1.1, /etc/system settings are:
set maxusers=256

* Oracle specific tuning
set symsys: shminfo_shmmni=400
set symsys: shminfo_shmseg=50
set semsys: seminfo_semmns=14000
set semsys: seminfo_semmni=1024
set semsys: seminfo_semmsl=1024
set shmsys: shminfo_shmmax=4294967295