相关的理论说明，参考如下Blog：

Oracle RACFailover 详解

http://blog.csdn.net/tianlesoftware/article/details/5340788

How To Configure Server Side TransparentApplication Failover [ID 460982.1]

1．创建TAFService

[oracle@db1 bin]$ ./srvctl add service -d orcl -s server_taf -r "orcl1,orcl2" -P BASIC

--这里的orcl是database name，orcl1和orcl2 是instance name。

2. 启动server_taf服务

[oracle@db1 bin]$ ./srvctl start service -d orcl -s server_taf

3. 检查service运行情况

[oracle@db1 bin]$ ./srvctl config service -d orcl

Service name: server_taf

Service is enabled

Server pool: orcl_server_taf

Cardinality: 2

Disconnect: false

Service role: PRIMARY

Management policy: AUTOMATIC

DTP transaction: false

AQ HA notifications: false

Failover type: NONE

Failover method: NONE

TAF failover retries: 0

TAF failover delay: 0

Connection Load Balancing Goal: LONG

Runtime Load Balancing Goal: NONE

TAF policy specification: BASIC

Edition:

Preferred instances: orcl1,orcl2

Available instances:

4.确认serviceID

SQL> select name,service_id from dba_services where name = 'server_taf';

NAME                                                            SERVICE_ID

--------------------------------------

server_taf                                                               3

5.给service添加参数：

SQL> execute dbms_service.modify_service (service_name => 'server_taf' - 
, aq_ha_notifications => true - 
, failover_method => dbms_service.failover_method_basic - 
, failover_type => dbms_service.failover_type_select - 
, failover_retries => 180 - 
, failover_delay => 5 - 
, clb_goal => dbms_service.clb_goal_long); 

6. 确认参数修改：

col name format a15  
col failover_method format a11 heading 'METHOD' 
col failover_type format a10 heading 'TYPE' 
col failover_retries format 9999999 heading 'RETRIES' 
col goal format a10 
col clb_goal format a8 
col AQ_HA_NOTIFICATIONS format a5 heading 'AQNOT'