配置Server Side TAF
實驗環境：Oracle 11.2.0.4 RAC
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.檢查已注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:
[oracle@jyrac1?~]$?srvctl?add?service?-d?jyzhao?-s?server_taf?-r?"jyzhao1,jyzhao2"?-P?BASIC [oracle@jyrac1?~]$注意不能使用grid用戶操作，如果使用grid 用戶執行的話，會報錯:
[grid@jyrac1?~]$?srvctl?add?service?-d?jyzhao?-s?server_taf?-r?"jyzhao1,jyzhao2"?-P?BASIC PRCD-1288?:?User?is?not?authorized?to?create?service?server_taf?for?database?jyzhao PRKH-1014?:?Current?user?"grid"?is?not?the?oracle?owner?user?"oracle"?of?oracle?home?"/opt/app/oracle/product/11.2.0/dbhome_1"2.啟動server_taf服務
eg: srvctl start service -d rac -s server_taf
啟動server_taf服務
[oracle@jyrac1?~]$?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:
[oracle@jyrac1?~]$?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?=?73??;NAME????????????METHOD??????TYPE????????RETRIES?GOAL???????CLB_GOAL?AQNOT ---------------?-----------?----------?--------?----------?--------?----- server_taf??????NONE????????NONE??????????????0?NONE???????LONG?????NOSQL>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.檢查已注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))
我這里版本差異，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:readyLOCAL?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:readyLOCAL?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/oracle@192.168.56.160/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/oracle@192.168.56.160/server_taf
10.1 結論： 可以實現TAF功能，相當于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/oracle@192.168.56.150/server_taf
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：
[oracle@jyrac2?admin]$?sqlplus?system/oracle@tafSQL*Plus:?Release?11.2.0.4.0?Production?on?Fri?Mar?10?05:11:30?2017Copyright?(c)?1982,?2013,?Oracle.??All?rights?reserved.Connected?to: Oracle?Database?11g?Enterprise?Edition?Release?11.2.0.4.0?-?64bit?Production With?the?Partitioning,?Real?Application?Clusters,?Automatic?Storage?Management,?OLAP, Data?Mining?and?Real?Application?Testing?optionsSQL>?select?host_name,instance_name?from?v$instance;HOST_NAME ---------------------------------------------------------------- INSTANCE_NAME ---------------- jyrac2 jyzhao2--這里強制關掉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/oracle@192.168.56.151/server_taf
如果客戶端配置tnsnames.ora，可以通過sqlplus?system/oracle@tafvip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：
[oracle@jyrac2?admin]$?sqlplus?system/oracle@tafvipSQL*Plus:?Release?11.2.0.4.0?Production?on?Fri?Mar?10?05:15:32?2017Copyright?(c)?1982,?2013,?Oracle.??All?rights?reserved.Connected?to: Oracle?Database?11g?Enterprise?Edition?Release?11.2.0.4.0?-?64bit?Production With?the?Partitioning,?Real?Application?Clusters,?Automatic?Storage?Management,?OLAP, Data?Mining?and?Real?Application?Testing?optionsSQL>?select?host_name,instance_name?from?v$instance;HOST_NAME ---------------------------------------------------------------- INSTANCE_NAME ---------------- jyrac2 jyzhao2--這里強制關掉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。
轉載于:https://blog.51cto.com/12953214/1942947
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