oracle 9i client 12c 접속 12c client 9i 접속 시도

OS환경 : Oracle Linux 4.8, 6.8 (64bit)

 

DB 환경 : Oracle Database 9.2.0.8, 12.2.0.4

 

방법 : oracle 9i client 12c 접속 12c client 9i 접속 시도

oracle 9i 에서 12c로 접속해보고 가능하면 db link 연결도 확인해보는 테스트

공식적으로는 클라이언트 db링크 모두 양방향 지원하지 않음

(Client / Server Interoperability Support Matrix for Different Oracle Versions (문서 ID 207303.1)참조)

 

테스트

9i db와 12c db 모두 system계정을 사용하고 패스워드는 oracle 로 설정되어 있음

 

9i db서버 tnsnames.ora 설정

1 2 3 4 5 6 7 8 9 10

oracle12 =   (DESCRIPTION =     (ADDRESS_LIST =       (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.50)(PORT = 1521))     )     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = ORA12)     )   )

 

tnsping 시도

$ tnsping oracle12
 
TNS Ping Utility for Linux: Version 9.2.0.8.0 - Production on 13-MAR-2021 21:39:20
 
Copyright (c) 1997, 2006, Oracle Corporation.  All rights reserved.
 
Used parameter files:
 
 
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.50)(PORT = 1521))) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ORA12)))
OK (0 msec)

성공

 

12c db서버 tnsnames.ora 설정

oracle9 =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.10)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = ORA9)
    )
  )

 

tnsping 시도

$ tnsping oracle9
 
TNS Ping Utility for Linux: Version 12.2.0.1.0 - Production on 13-FEB-2019 09:10:55
 
Copyright (c) 1997, 2016, Oracle.  All rights reserved.
 
Used parameter files:
/oracle/app/oracle/product/12.2.0/dbhome_1/network/admin/sqlnet.ora
 
 
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.10.10)(PORT = 1521))) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ORA9)))
OK (0 msec)

성공

 

12c db서버 sqlnet.ora 설정(8)

$ vi $ORACLE_HOME/network/admin/sqlnet.ora
 
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=8
SQLNET.ALLOWED_LOGON_VERSION_SERVER=8

 

2개 파라미터 추가

 

12c db서버 패스워드 변경

$ sqlplus / as sysdba
 
SQL*Plus: Release 12.2.0.1.0 Production on Wed Feb 13 14:33:44 2019
 
Copyright (c) 1982, 2016, Oracle.  All rights reserved.
 
 
Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
 
SQL> alter user system identified by oracle;
 
User altered.

 

12c db서버 리스너 재기동

$ lsnrctl stop
 
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 13-FEB-2019 14:34:34
 
Copyright (c) 1991, 2016, Oracle.  All rights reserved.
 
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oracle12)(PORT=1521)))
The command completed successfully
 
$ lsnrctl start
 
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 13-FEB-2019 14:34:35
 
Copyright (c) 1991, 2016, Oracle.  All rights reserved.
 
Starting /oracle/app/oracle/product/12.2.0/dbhome_1/bin/tnslsnr: please wait...
 
TNSLSNR for Linux: Version 12.2.0.1.0 - Production
System parameter file is /oracle/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora
Log messages written to /oracle/app/oracle/diag/tnslsnr/oracle12/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle12)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
 
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oracle12)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.2.0.1.0 - Production
Start Date                13-FEB-2019 14:34:35
Uptime                    0 days 0 hr. 0 min. 5 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/app/oracle/product/12.2.0/dbhome_1/network/admin/listener.ora
Listener Log File         /oracle/app/oracle/diag/tnslsnr/oracle12/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle12)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully

 

12c -> 9i 접속 시도

$ sqlplus /nolog
 
SQL*Plus: Release 12.2.0.1.0 Production on Wed Feb 13 14:35:46 2019
 
Copyright (c) 1982, 2016, Oracle.  All rights reserved.
 
@> conn system/oracle@oracle9
ERROR:
ORA-03134: Connections to this server version are no longer supported.

ORA-03134: Connections to this server version are no longer supported.

버전이 호환되지 않아 접속되지 않음

 

9i -> 12c 접속 시도

$ sqlplus /nolog
 
SQL*Plus: Release 9.2.0.8.0 - Production on Sun Mar 14 03:14:20 2021
 
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
 
> conn system/oracle@oracle12
세그멘테이션 오류
$ 

세그멘테이션 오류가 나오고 바로 sqlplus 창에서 나가짐

 

12c db서버 sqlnet.ora 재설정(10)

$ vi $ORACLE_HOME/network/admin/sqlnet.ora
 
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=10
SQLNET.ALLOWED_LOGON_VERSION_SERVER=10

해당 파라미터 10으로 변경

 

12c db서버 패스워드 변경, 12c db서버 리스너 재기동

 

9i -> 12c 접속 시도

$ sqlplus /nolog
 
SQL*Plus: Release 9.2.0.8.0 - Production on Sun Mar 14 03:16:47 2021
 
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
 
> conn system/oracle@oracle12
ERROR:
ORA-28040: No matching authentication protocol

인증 문제로 접속 안됨

 

12c db서버 sqlnet.ora 재설정(9)

$ vi $ORACLE_HOME/network/admin/sqlnet.ora
 
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=9
SQLNET.ALLOWED_LOGON_VERSION_SERVER=9

해당 파라미터 9으로 변경

 

12c db서버 패스워드 변경, 12c db서버 리스너 재기동

 

9i -> 12c 접속 시도

 
SQL*Plus: Release 9.2.0.8.0 - Production on Sun Mar 14 03:21:23 2021
 
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
 
> conn system/oracle@oracle12
세그멘테이션 오류

처음 했을때와 동일 증상 발생

 

https://cafe.naver.com/prodba/48948 글작성자와 https://cafe.naver.com/prodba/49664 글에 의하면

9i -> 12c로 접속은 된다고 하는데 왜 나는 접속부터 안되는지 모르겠음..

 

 

참조 : 

https://www.freelists.org/post/oracle-l/Cant-connect-oracle-12c-to-9i-through-dblink-neither-sqlplus-but-yes-10g-and-11g

https://cafe.naver.com/prodba/49664

https://cafe.naver.com/prodba/48948