配置Server Side TAF
實驗環境：Oracle 11.2.0.4 RAC
參考MOS文檔：
How To Configure Server Side Transparent Application Failover (文檔 ID 460982.1)
- 1.為設置TAF在RAC集群上新建服務
- 2.啟動server_taf服務
- 3.檢查確認服務正在運行
- 4.找到剛創建服務的service_id
- 5.根據service_id審查服務的信息
- 6.給服務添加server side failover參數
- 7.再次審查服務可以看到Method, Type和Retries值
- 8.檢查已註冊的服務的監聽信息
- 9.創建網絡服務名
- 10.測試TAF功能
1.為設置TAF在RAC集群上新建服務
eg: srvctl add service -d rac -s server_taf -r "rac1,rac2" -P BASIC
使用oracle用戶在RAC集群上新建服務server_taf:
[[email protected] ~]$ srvctl add service -d jyzhao -s server_taf -r "jyzhao1,jyzhao2" -P BASIC
[[email protected] ~]$ 註意不能使用grid用戶操作，如果使用grid 用戶執行的話，會報錯:
[[email protected] ~]$ srvctl add service -d jyzhao -s server_taf -r "jyzhao1,jyzhao2" -P BASIC PRCD-1288 : User is not authorized to create service server_taf for database jyzhao PRKH-1014 : Current user "grid" is not the oracle owner user "oracle" of oracle home "/opt/app/oracle/product/11.2.0/dbhome_1"
2.啟動server_taf服務
eg: srvctl start service -d rac -s server_taf
啟動server_taf服務
[[email protected] ~]$ srvctl start service -d jyzhao -s server_taf3.檢查確認服務正在運行
eg: srvctl config service -d rac
檢查確認服務正在運行:
[[email protected] ~]$ srvctl config service -d jyzhao Service name: server_taf Service is enabled Server pool: jyzhao_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: jyzhao1,jyzhao2 Available instances:
4.找到剛創建服務的service_id
eg: select name,service_id from dba_services where name = ‘server_taf‘;
找到剛創建服務的service_id
SQL> select name,service_id from dba_services where name = ‘server_taf‘;
NAME SERVICE_ID
---------------------------------------------------------------- ----------
server_taf 75.根據service_id審查服務的信息
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‘
select name, failover_method, failover_type, failover_retries,goal, clb_goal,aq_ha_notifications
from dba_services where service_id = 7;
根據service_id審查服務的信息:
SQL> col name format a15
SQL> col failover_method format a11 heading ‘METHOD‘
SQL> col failover_type format a10 heading ‘TYPE‘
SQL> col failover_retries format 9999999 heading ‘RETRIES‘
SQL> col goal format a10
SQL> col clb_goal format a8
SQL> col AQ_HA_NOTIFICATIONS format a5 heading ‘AQNOT‘
SQL> select name, failover_method, failover_type, failover_retries,goal, clb_goal,aq_ha_notifications
2 from dba_services where service_id = 7
3 ;
NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT
--------------- ----------- ---------- -------- ---------- -------- -----
server_taf NONE NONE 0 NONE LONG NO
SQL> 6.給服務添加server side failover參數
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);
11.2版本可以使用srvctl 修改服務的信息：
srvctl modify service -d RAC -s server_taf -m BASIC -e SELECT -q TRUE -j LONG
給服務添加server side failover參數:
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);
PL/SQL procedure successfully completed.7.再次審查服務可以看到Method, Type和Retries值
select name, failover_method, failover_type, failover_retries,goal, clb_goal,aq_ha_notifications
from dba_services where service_id = 7;
再次審查服務可以看到Method, Type和Retries值:
SQL> select name, failover_method, failover_type, failover_retries,goal, clb_goal,aq_ha_notifications
2 from dba_services where service_id = 7;
NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT
--------------- ----------- ---------- -------- ---------- -------- -----
server_taf BASIC SELECT 180 NONE LONG YES8.檢查已註冊的服務的監聽信息
lsnrctl services
Service "server_taf.za.oracle.com" has 2 instance(s).
Instance "rac1", status READY, has 2 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=dell01)(PORT=1521))
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Instance "rac2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=dell02)(PORT=1521))
我這裏版本差異，顯示有區別，分別在不同節點顯示自己的實例：
--node1:
Service "server_taf" has 1 instance(s).
Instance "jyzhao1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
The command completed successfully
--node2:
Service "server_taf" has 1 instance(s).
Instance "jyzhao2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
The command completed successfully9.創建網絡服務名
SERVERTAF =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST = dell01)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = dell02)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = server_taf.za.oracle.com)
)
)
服務端RAC所有節點配置tnsnames.ora,添加內容：
SERVERTAF =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST = jyrac1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = jyrac2)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = server_taf)
)
)sqlplus system/[email protected]/server_taf
10.測試TAF功能
select host_name,instance_name from v$instance;
SQL> select instance_name from V$instance;
INSTANCE_NAME
----------------
rac2
SQL> shutdown abort;
ORACLE instance shut down.
select host_name,instance_name from v$instance;
10.1 模擬客戶端使用scanVIP測試能否實現TAF
sqlplus system/[email protected]/server_taf
[[email protected] ~]$ sqlplus system/[email protected]/server_taf
SQL*Plus: Release 11.2.0.4.0 Production on Fri Mar 10 02:59:53 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> select host_name,instance_name from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac1
jyzhao1
--這裏強制關掉jyzhao1實例。
SQL> /
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac2
jyzhao210.1 結論： 可以實現TAF功能，相當於客戶端不再需要配置，直接通過SCAN VIP連接。
10.2 模擬客戶端使用Public IP測試能否實現TAF
sqlplus system/[email protected]/server_taf
SQL> select host_name,instance_name from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac1
jyzhao1
--這裏強制關掉jyzhao1實例。
SQL> /
select host_name,instance_name from v$instance
*
ERROR at line 1:
ORA-12153: TNS:not connected
Process ID: 20116
Session ID: 24 Serial number: 7如果客戶端配置tnsnames.ora,將publicIP配置
TAF =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.150)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.152)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = server_taf)
)
)再次測試：
[[email protected] admin]$ sqlplus system/[email protected]
SQL*Plus: Release 11.2.0.4.0 Production on Fri Mar 10 05:11:30 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> select host_name,instance_name from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac2
jyzhao2
--這裏強制關掉jyzhao2實例。
SQL> /
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac1
jyzhao110.2 結論： 直接連接Public IP無法實現TAF功能。但客戶端配置Public IP列表，可以實現。
10.3 模擬客戶端使用VIP測試能否實現TAF
sqlplus system/[email protected]/server_taf
[[email protected] ~]$ sqlplus system/[email protected]/server_taf
SQL*Plus: Release 11.2.0.4.0 Production on Fri Mar 10 04:32:20 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> select host_name,instance_name from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac1
jyzhao1
SQL> /
select host_name,instance_name from v$instance
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 32459
Session ID: 159 Serial number: 3如果客戶端配置tnsnames.ora，可以通過sqlplus system/[email protected]連接。
TAFVIP =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.151)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.153)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = server_taf)
)
)再次測試：
[[email protected] admin]$ sqlplus system/[email protected]
SQL*Plus: Release 11.2.0.4.0 Production on Fri Mar 10 05:15:32 2017
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> select host_name,instance_name from v$instance;
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac2
jyzhao2
--這裏強制關掉jyzhao2實例。
SQL> /
HOST_NAME
----------------------------------------------------------------
INSTANCE_NAME
----------------
jyrac1
jyzhao110.3 結論： 直接連接VIP無法實現TAF功能。但客戶端配置VIP列表，可以實現。
配置Server Side TAF