rac的结构和单实例结构配置转换方面可能就是逻辑standby在配置时需要注意CLUSTER_DATABASE这个参数，其他都是一样的[@more@]

[oracle@yl254-20 ~]$ more pr.ora

prdb.__db_cache_size=100663296

prdb.__java_pool_size=4194304

prdb.__large_pool_size=4194304

prdb.__shared_pool_size=226492416

prdb.__streams_pool_size=0

*.audit_file_dest='/u01/app/admin/prdb/adump'

*.background_dump_dest='/u01/app/admin/prdb/bdump'

*.compatible='10.2.0.3.0'

*.control_files='/u02/oradata/prdb/control01.ctl'

*.core_dump_dest='/u01/app/admin/prdb/cdump'

*.db_block_size=8192

*.db_domain=''

*.db_file_multiblock_read_count=16

*.db_name='prdb'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=prdbXDB)'

*.fal_client='prdb'

*.fal_server='lstdb'

*.job_queue_processes=10

*.log_archive_dest_1='location=/u02/arch/prdb valid_for=(all_logfiles,all_roles) db_unique_name=prdb'

*.log_archive_dest_2='service=lstdb lgwr async valid_for=(online_logfiles,primary_role) db_unique_name=prdb'

*.open_cursors=300

*.pga_aggregate_target=114294784

*.processes=1500

*.remote_login_passwordfile='EXCLUSIVE'

*.sessions=1655

*.sga_target=343932928

*.undo_management='AUTO'

*.undo_tablespace='UNDOTBS1'

*.user_dump_dest='/u01/app/admin/prdb/udump'

[oracle@yl254-20 ~]$ more st.ora

lstdb.__db_cache_size=104857600

lstdb.__java_pool_size=4194304

lstdb.__large_pool_size=4194304

lstdb.__shared_pool_size=222298112

lstdb.__streams_pool_size=0

*.audit_file_dest='/u01/app/admin/lstdb/adump'

*.background_dump_dest='/u01/app/admin/lstdb/bdump'

*.compatible='10.2.0.3.0'

*.control_files='/u02/oradata/lstdb/control01.ctl'

*.core_dump_dest='/u01/app/admin/lstdb/cdump'

*.db_block_size=8192

*.db_domain=''

*.db_file_multiblock_read_count=16

*.db_file_name_convert='/u02/oradata/prdb','/u02/oradata/lstdb'

*.db_name='LSTDB'#db_name is auto changed when db converts to logical standby

*.db_name='prdb'

*.db_unique_name='lstdb'

*.dispatchers='(PROTOCOL=TCP) (SERVICE=lstdbXDB)'

*.fal_client='lstdb'

*.fal_server='prdb'

*.job_queue_processes=10

*.log_archive_dest_1='location=/u02/arch/lstdb valid_for=(all_logfiles,all_roles) db_unique_name=lstdb'

*.log_archive_dest_2='service=prdb lgwr async valid_for=(online_logfiles,primary_role) db_unique_name=lstdb'

*.log_archive_dest_state_2='ENABLE'

*.log_file_name_convert='/u02/oradata/prdb','/u02/oradata/lstdb'

*.open_cursors=300

*.pga_aggregate_target=114294784

*.processes=1500

*.remote_login_passwordfile='EXCLUSIVE'

*.sessions=1655

*.sga_target=343932928

*.standby_archive_dest='location=/u02/arch/lstdb'

*.standby_file_management='auto'

*.undo_management='AUTO'

*.undo_tablespace='UNDOTBS1'

*.user_dump_dest='/u01/app/admin/lstdb/udump'