oracle error- ORA-00385: cannot enable Very Large Memory with new buffer cache parameters

ORA-00385:	cannot enable Very Large Memory with new buffer cache parameters
Cause:	User specified one or more of { db_cache_size , db_recycle_cache_size, db_keep_cache_size, db_nk_cache_size (where n is one of 2,4,8,16,32) } AND use_indirect_data_buffers is set to TRUE. This is illegal.
Action:	Very Large Memory can only be enabled with the old (pre-Oracle_8.2) parameters.

ORA-00384: Insufficient memory to grow cache

ORA-00384:	Insufficient memory to grow cache
Cause:	The system could not allocate sufficient memory to grow the cache to the specified size.
Action:	Attempt a smaller increase in the value of the parameter.

ORA-00383:	DEFAULT cache for blocksize string cannot be reduced to zero
Cause:	User attempted to reduce db_cache_size to zero, or attempted to to reduce db_<n>K_cache_size to zero while there were still online tablespaces with blocksize <n>K. Note that since the SYSTEM tablespace cannot be taken offline, it is always illegal to set db_cache_size to zero.
Action:	Offline any tablespaces with the corresponding blocksize and then perform the operation again.