实验环境：Linux环境 Oracle 11.2.0.1

主库：orcl

备库：stby

1 检查监听是否启动

2 配置主备数据库的初始化参数文件

orcl.__db_cache_size=104857600
orcl.__java_pool_size=4194304
orcl.__large_pool_size=4194304
orcl.__oracle_base='/oracle'#ORACLE_BASE set from environment
orcl.__pga_aggregate_target=155189248
orcl.__sga_target=268435456
orcl.__shared_io_pool_size=0
orcl.__shared_pool_size=142606336
orcl.__streams_pool_size=4194304
*.audit_file_dest='/oracle/admin/orcl/adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.control_files='/oradata/orcl/control01.ctl','/oradata/flash_recovery_area/orcl/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='orcl'
*.db_recovery_file_dest='/oradata/flash_recovery_area'
*.db_recovery_file_dest_size=4039114752
*.diagnostic_dest='/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=orclXDB)'
*.memory_target=422576128
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'

编辑备库的参数文件:

stby.__db_cache_size=104857600
stby.__java_pool_size=4194304
stby.__large_pool_size=4194304
stby.__oracle_base='/oracle'#ORACLE_BASE set from environment
stby.__pga_aggregate_target=155189248
stby.__sga_target=268435456
stby.__shared_io_pool_size=0
stby.__shared_pool_size=142606336
stby.__streams_pool_size=4194304
*.audit_file_dest='/oracle/admin/stby/adump'
*.audit_trail='db'
*.compatible='11.2.0.0.0'
*.db_block_size=8192
*.db_domain=''
  --在同一台机器上搭建dg 要与主库的一样 否则
*.db_recovery_file_dest='/oradata/flash_recovery_area'
*.db_recovery_file_dest_size=4039114752
*.diagnostic_dest='/oracle'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=stbyXDB)'
*.memory_target=622576128
*.open_cursors=300
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.undo_tablespace='UNDOTBS1'

备份主库: