19c TAF 配置及測試
一、添加services_taf：
[root@ora19crac1 ~]# su - oracle
Last login: Tue Mar 3 18:06:26 CST 2020 on pts/1
[oracle@ora19crac1 ~]$ srvctl add service -d woo -s server_taf -r "woo1,woo2" -P BASIC
二、啓動server_taf
[oracle@ora19crac1 ~]$ srvctl start service -d woo -s server_taf
三、檢查server_taf 運行狀態
[oracle@ora19crac1 ~]$ srvctl config service -d woo
Service name: server_taf
Server pool:
Cardinality: 2
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: false
Global: false
Commit Outcome: false
Failover type:
Failover method:
Failover retries:
Failover delay:
Failover restore: NONE
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Pluggable database name:
Hub service:
Maximum lag time: ANY
SQL Translation Profile:
Retention: 86400 seconds
Replay Initiation Time: 300 seconds
Drain timeout:
Stop option:
Session State Consistency: DYNAMIC
GSM Flags: 0
Service is enabled
Preferred instances: woo1,woo2
Available instances:
CSS critical: no
Service uses Java: false
四、檢查剛纔創建的服務
SQL> select name,service_id from dba_services where name ='server_taf';
NAME SERVICE_ID
--------------- ----------
server_taf 3
五、檢查服務配置
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 = 3;
NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT
--------------- ----------- ---------- -------- ---------- -------- -----
server_taf 0 NONE LONG NO
六、修改故障轉移參數策略
[oracle@ora19crac1 ~]$ srvctl modify service -d woo -s server_taf -m BASIC -e SELECT -q TRUE -j LONG
[oracle@ora19crac1 ~]$ srvctl config service -d woo
Service name: server_taf
Server pool:
Cardinality: 2
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: true
Global: false
Commit Outcome: false
Failover type: SELECT
Failover method: BASIC
Failover retries:
Failover delay:
Failover restore: NONE
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Pluggable database name:
Hub service:
Maximum lag time: ANY
SQL Translation Profile:
Retention: 86400 seconds
Replay Initiation Time: 300 seconds
Drain timeout:
Stop option:
Session State Consistency: DYNAMIC
GSM Flags: 0
Service is enabled
Preferred instances: woo1,woo2
Available instances:
CSS critical: no
Service uses Java: false
七、再次檢查服務，我們可以看到值都有了
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 = 3;
NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT
--------------- ----------- ---------- -------- ---------- -------- -----
server_taf BASIC SELECT 0 NONE LONG YES
八、檢查服務是否有註冊到監聽
[oracle@ora19crac1 ~]$ lsnrctl services
LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 19-MAR-2020 16:58:22
Copyright (c) 1991, 2019, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
……
Service "server_taf" has 1 instance(s).
Instance "woo1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "woo" has 1 instance(s).
Instance "woo1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
……
The command completed successfully
十、測試
SQL> col host_name format a11;
SQL> select instance_name,host_name from v$instance;
INSTANCE_NAME HOST_NAME
---------------- -----------
woo2 ora19crac2
十一、新開一個窗口關閉這個實例
SQL> shut abort
ORACLE instance shut down.
十二、查詢可以正常進行，但是會有短暫的鎖住現象
SQL> col host_name format a11;
SQL> select instance_name,host_name from v$instance;
INSTANCE_NAME HOST_NAME
---------------- -----------
woo2 ora19crac2
