Migrate Oracle database from windows system to Linux Oracle RAC cluster environment (4) -- modify the scanip of Oracle11g RAC cluster

hold Oracle Database from Windows System migration to Linux Oracle Rac Cluster environment （4）—— modify oracle11g rac Clustered scanIP

When migrating data in a production environment , You need to create the target database cluster first , After the data migration is successful, the original IP Address access oracle database , In this way, the original client does not need to make any changes . here , You need to change the target database cluster scanIP For the source database IP Address .

When the client application uses scanIP When accessing the database ,scan listener Will forward the connection to local listener On . node rac1 The local monitoring content of is as follows ：

LISTENER_RAC1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=rac1-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.101)(PORT=1521)
(IP=FIRST))))		# line added by Agent

One 、 see scan ip Status information

[[email protected] ~]$ srvctl config scan
SCAN name: rac-scan, Network: 1/192.168.1.0/255.255.255.0/ens34
SCAN VIP name: scan1, IP: /rac-scan/192.168.1.201

Two 、 stop it scan_listener and scan

#  stop it  scan_listener  and  scan 
srvctl stop scan_listener
srvctl stop scan
# ---------------------------------------------------------------------
[[email protected] ~]$ srvctl stop scan_listener
[[email protected] ~]$ srvctl stop scan

#  see  scan_listener  and  scan  The state of 
[[email protected] ~]$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is not running

[[email protected] ~]$ srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is not running

[[email protected] ~]$ crs_stat -t | grep  scan
ora.scan1.vip  ora....ip.type OFFLINE   OFFLINE               

[[email protected] ~]$ crs_stat -t | grep  lsnr
ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac1        
ora....N1.lsnr ora....er.type OFFLINE   OFFLINE               
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora....C2.lsnr application    ONLINE    ONLINE    rac2     

3、 ... and 、 modify /etc/hosts In the document scanIP（ All nodes ）

#  Switch to  root  user , node 1  and   node 2  At the same time to modify  scan IP
[[email protected] ~]# vi /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

#Public Network (bond1)—— public IP

192.168.1.101 rac1
192.168.1.102 rac2

#Private Interconnect (bond2)—— private IP

10.1.1.101 rac1-priv
10.1.1.102 rac2-priv

#Virtual IP—— fictitious  IP, And  bond1  Must be in the same network segment 
192.168.1.111 rac1-vip
192.168.1.112 rac2-vip

#scan IP
192.168.1.221 my-racscan  #  Turned out to be ：192.168.1.201

Four 、 modify DNS Service configuration information

[[email protected] ~]# vi /var/named/chroot/var/named/1.168.192.local 

$TTL 86400
@       IN SOA  dns.oracle.com.     root.oracle.com. (
                                        19997022700 ; serial
                                        28800       ; refresh
                                        14400       ; retry
                                        3600000     ; expire
                                        86400 )     ; minimum
@          IN        NS      dns.oracle.com.
101        IN        PTR     dns.oracle.com.
101        IN        PTR     rac1.oracle.com.
102        IN        PTR     rac2.oracle.com.
221        IN        PTR     scan.oracle.com.   #  Turned out to be ：201

[[email protected] ~]# vi /var/named/chroot/var/named/oracle.com.zone 

$TTL 86400
@       IN SOA  dns.oracle.com.     root.oracle.com. (
                                        42      ; serial
                                        3H      ; refresh
                                        15M     ; retry
                                        1W      ; expire
                                        1D )    ; minimum
@          IN        NS      dns.oracle.com.
dns        IN        A       192.168.1.101
rac1       IN        A       192.168.1.101
rac2       IN        A       192.168.1.102
scan       IN        A       192.168.1.221   #  Turned out to be ：192.168.1.201

#  restart  named  service 
[[email protected] ~]# systemctl restart named

#  test 
[[email protected] ~]# nslookup 192.168.1.221
Server:		192.168.1.101
Address:	192.168.1.101#53

221.1.168.192.in-addr.arpa	name = scan.oracle.com.

[[email protected] ~]# nslookup scan.oracle.com
Server:		192.168.1.101
Address:	192.168.1.101#53

Name:	scan.oracle.com
Address: 192.168.1.221

5、 ... and 、 modify SCAN name

#  Switch to  root  user 
[[email protected] ~]# cd /u01/app/11.2.0/grid/bin
[[email protected] bin]# pwd
/u01/app/11.2.0/grid/bin

[[email protected] bin]# ./srvctl modify scan -n my-racscan

#  see scan ip  Status information 
[[email protected] bin]# ./srvctl config scan
SCAN  name : my-racscan,  The Internet : 1/192.168.1.0/255.255.255.0/ens34
SCAN VIP  name : scan1, IP: /my-racscan/192.168.1.221

6、 ... and 、 start-up scan and scan_listener

#  start-up  scan  and  scan_listener
[[email protected] admin]$ srvctl start scan
[[email protected] admin]$ srvctl start scan_listener

#  see  scan  and  scan_listener  The state of ：
[[email protected] admin]$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node rac1
[[email protected] admin]$ srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node rac1

[[email protected] admin]$ crs_stat -t | grep  scan
ora.scan1.vip  ora....ip.type ONLINE    ONLINE    rac1        
[[email protected] admin]$ crs_stat -t | grep  lsnr
ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac1        
ora....N1.lsnr ora....er.type ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        

7、 ... and 、 test ： Use the new scanIP Access database

1、 Test new scanIP Whether you can use

[[email protected] ~]$ ping 192.168.1.221
PING 192.168.1.221 (192.168.1.221) 56(84) bytes of data.
64 bytes from 192.168.1.221: icmp_seq=1 ttl=64 time=2.84 ms
64 bytes from 192.168.1.221: icmp_seq=2 ttl=64 time=0.267 ms
64 bytes from 192.168.1.221: icmp_seq=3 ttl=64 time=14.3 ms
^C
--- 192.168.1.221 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 0.267/5.827/14.374/6.134 ms

2、 Use the new scanIP Access database

[oracle@rac1 ~]$ sqlplus sys/oracle@192.168.1.221/hisdb as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sun Jun 19 10:24:11 2022

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor

--  There is an error , Error code ：ORA-12514

8、 ... and 、 solve ORA-12514 error

1、 At the node rac1 Do the following

--  View parameters ：remote_listener
SQL> show parameter remote_listener

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
remote_listener 		     string

--  Modify the parameters  remote_listener  The value of is empty 
SQL> alter system set remote_listener='';
System altered.

--  register 
SQL> alter system register;
System altered.

--  Modify the parameters  remote_listener  Value 
SQL> alter system set remote_listener='my-racscan:1521';
System altered.

--  View parameters ：remote_listener
SQL> show parameter remote_listener

NAME				     TYPE	 VALUE
------------------------------------ ----------- ------------------------------
remote_listener 		     string	 my-racscan:1521

2、 test ： Use the new scanIP Access database

[[email protected] ~]$ sqlplus sys/[email protected]/hisdb as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Wed Jun 22 13:57:47 2022

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

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