SAP系统参数可以在/usr/sap/SID/SYS/profile目录下设置，你可以su - sidadm，然后用cdpro命令直接到达。
-----------------DEFAULT.PFL----------------
- zcsa/installed_languages = 1DE
- zcsa/second_languages = 1
- zcsa/system_language = 1
- login/no_automatic_user_sapstar = 0
- login/system_client = 800（写用户登录默认集团号）
- rdisp/gui_auto_logout = 1800
- login/fails_to_user_lock = 5
- login/min_password_lng = 8
- login/min_password_digits = 1
- login/min_password_letters = 1
- login/password_expiration_time = 90
-------------------- instance --------------
12. login/create_sso2_ticket = 2
13. icm/server_port_0 = PROT=HTTP,PORT=80$$,TIMEOUT=600,PROCTIMEOUT=600
14. icm/server_port_1 = PROT=HTTPS,PORT=443 $ $ , TIMEOUT=600,PROCTIMEOUT=600
15. icm/server_port_2 = PROT=SMTP,PORT=25000,TIMEOUT=180
16. icm/host_name_full =（写带域名的主机名）
17. rdisp/wp_no_btc = 10
18. rdisp/wp_no_dia = 20
19. em/initial_size_MB = 16000
20. gw/acl_mode = 0
安全策略系列：
login/no_automatic_user_sapstar 用户SAP* 能不能登录, 0代表SAP可以登录，1代表SAP不能登陆！
login/password_expiration_time 密码有效期
login/fails_to_user_lock 密码输错多少次后锁定
login/failed_user_auto_unlock 用户失效后多长时间解锁
login/disable_multi_gui_login 设置同个client 同个用户ID可以允许同时登录几个，一般设置为1
rdisp/gui_auto_logout 设置用户没进行任何操作就退出登录的时间。
工作进程系列：
rdisp/rfc_max_login 最大SAP用户登录数
rdisp/max_wprun_time DIA进程程序运行的最长时间限制
rdisp/wp_no_btc SAP实例的后台进程数量
rdisp/wp_no_dia 会话进程数量
rdisp/wp_no_spo 打印进程数量
rdisp/wp_no_vb 更新进程数量
rdisp/wp_no_vb2 更新2进程数量
系统性能参数系列：
ztta/roll_area (1.000.000 - 15.000.000) classic roll area per user and internal session.
ztta/roll_extension (10.000.000 - 500.000.000) available memory/user in extended memory EM.
ztta/max_memreq_MB maximum size of an individual memory request (in MB).
abap/heap_area_total (100.000.000 - 1.500.000.000) available memory (malloc) for all users of an application server.
abap/heap_area_dia (10.000.000 - 1.000.000.000) restriction of the memory that can be allocated to the heap with malloc per dialog process.
abap/heap_area_nondia (10.000.000 - 1.000.000.000) restriction of the memory that can be allocated to the heap with malloc per background process.
em/initial_size_MB (35 - 1200) Extended memory area from which all users of an application server can meet their memory needs.
abap/shared_objects_size_MB Size of the shared memory area that can be used to save shared objects area instances. This memory area is global for all users of the application server.
以下buffer相关的参数是SAP notes里的解释：
abap/buffersize Program buffer size
rsdb/ntab/entrycount Number of nametab entries administrated
rsdb/ntab/ftabsize Data area size for field description buffer
rsdb/ntab/sntabsize Data area size for short NTAB buffer
rsdb/ntab/irbdsize Data area size for initial records buffer
rtbb/max_tables directory entries in the single record buffer
rtbb/buffer_length Size of single record table buffers
rsdb/cua/buffersize CUA Buffer Size
zcsa/table_buffer_area Size of generic table buffer
zcsa/db_max_buftab Directory entries in generic table buffer
zcsa/presentation_buffer_area Size of the buffer allocated for screens
sap/bufdir_entries Maximum number of entries in the presentation buffer
nobuf/max_no_buffer_entries Number range buffer size
rsdb/obj/buffersize Size of export/import buffer
rsdb/obj/max_objects Max. no. of exporting/importing objects
rsdb/esm/buffersize_kb Size of exp/imp SHM buffer
rsdb/otr/buffersize_kb Size of OTR buffer
rsdb/esm/max_objects Max. number of objects in the buffer.
rsdb/obj/large_object_size Max. object size of export/import buffer
zcsa/calendar_ids Max. number of directory entries
zcsa/calendar_area Size of calendar buffer
rsdb/obj/large_object_size Max. object size of export/import buffer
查看系统所有的参数以及当前设定，用SE38执行程序 RSPARAM即可。