Oracle 11gR2 RAC Service-Side TAF 配置示例

How To Configure Server Side TransparentApplication Failover [ID 460982.1]

[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。

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

[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:

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

NAME SERVICE_ID

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

server_taf 3

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'

SQL> select name, failover_method,failover_type, failover_retries,goal, clb_goal,aq_ha_notifications from dba_services where service_id = 3;

NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT

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

server_taf BASIC SELECT 180 NONE LONG YES

SQL>