Database is too much Slow

Question

Hi All,
My database is running on window Xp oracle 10g and it is very slow
the os is having 1gb ram and sga is very slow this may cause the problem
here i am attaching the spfile so please let me know that which parameter is to be incraese so that we can incraese the performance of the system,
Thanks in advace,
Nitesh
*.background_dump_dest='C:\oracle\product\10.1.0\admin\orcl1\bdump'
*.compatible='10.1.0.2.0'
*.control_files='C:\oracle\product\10.1.0\oradata\orcl1\control01.ctl',
'C:\oracle\product\10.1.0\oradata\orcl1\control02.ctl','C:\oracle\product\10.1.0\oradata\orcl1\control03.ctl'
*.core_dump_dest='C:\oracle\product\10.1.0\admin\orcl1\cdump'
*.db_block_size=8192
*.db_cache_size=25165824
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_name='orcl1'
*.db_recovery_file_dest='C:\oracle\product\10.1.0\flash_recovery_area'
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orcl1XDB)'
*.java_pool_size=50331648
*.job_queue_processes=10
*.large_pool_size=8388608
*.open_cursors=300
*.pga_aggregate_target=25165824
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.shared_pool_size=83886080
*.sort_area_size=65536
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='C:\oracle\product\10.1.0\admin\orcl1\udump'
waiting for your early reply..........

Answer 1

Out of 1GB RAM only 160 is allocated to shared pool, buffer cache, large pool and java pool. This is too low.
Enable SGA_TARGET_SIZE and let Oracle decide the optimum value for different pools according to the workload. If performance is satisfactory you can disable SGA_TARGET_SIZE and the optimum values are stored in the spfile or otherwise you can continue with automatic memory management.