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下文給大家帶來Oracle 12c應用如何實現連接VIP輪訓負載均衡的，希望能夠給大家在實際運用中帶來一定的幫助，負載均衡涉及的東西比較多，理論也不多，網上有很多書籍，今天我們就用億速云在行業內累計的經驗來做一個解答。
目前很多生產數據庫都是兩節點RAC，應用連接的數據庫通常會連接SCAN IP或者VIP,這里做一個小實驗，如果我們使用VIP連接，
應該怎樣配置我們的客戶端，負載均衡是否是嚴格意義上的輪訓機制，只有通過自己的測試才能得到準備的答案。
tnsnames.ora配置
<rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$less tnsnames.ora
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/12.1.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
orcl =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
vip =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.203)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.204)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
2.測試腳本如下
<rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$
<rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$less load_balance.sh
#!/bin/bash
for i in {1..100}
do
echo $i
sqlplus -S system/oracle@vip <<EOF
select instance_name from v\$instance;
select count(*) from t1;
EOF
sleep 1
done
exit 0
3.開始測試，觀察
<rac01:orcl1:/u01/app/oracle/product/12.1.0/dbhome_1/network/admin>$sh load_balance.sh
1
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
2
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
3
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
4
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
5
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
6
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
7
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
8
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
9
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
10
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
11
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
12
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
13
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
14
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
15
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
16
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
17
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
18
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
19
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
20
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
21
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
22
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
23
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
24
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
25
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
26
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
27
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
28
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
29
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
30
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
31
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
32
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
33
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
34
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
35
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
36
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
37
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
38
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
39
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
40
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
41
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
42
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
43
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
44
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
45
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
46
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
47
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
48
INSTANCE_NAME
----------------
orcl2
COUNT(*)
----------
2910624
49
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
50
INSTANCE_N
....省略...............
COUNT(*)
----------
2910624
100
INSTANCE_NAME
----------------
orcl1
COUNT(*)
----------
2910624
看了以上關于Oracle 12c應用如何實現連接VIP輪訓負載均衡的，如果大家還有什么地方需要了解的可以在億速云行業資訊里查找自己感興趣的或者找我們的專業技術工程師解答的，億速云技術工程師在行業內擁有十幾年的經驗了。
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