oracle19.8 rac搭建adg-主备都在原主机上配置关于pdb连接

我们知道多租户环境下，pdb中建立的普通用户连接pdb需要通过tnsnames.ora或ezconnect的方式连接。而pdb的连接需要通过IP、端口和PDB服务名来连接，那么相同主机adg的情况下，备库的IP和PDB和主库是完全相同的。所以我们只能考虑通过区分端口来进行主备pdb的连接。（也可以不修改端口，修改tnsnames.ora指定实例即可，参看https://blog.csdn.net/jycjyc/article/details/107738737）

配置需要考虑如下步骤:

1.grid通过netca创建新的监听服务比如DGLISTENER,端口为2521（不能使用主机已经占用的端口）

2.grid用户创建好新的监听后，修改监听文件添加静态注册参数:

节点1添加实例1的名称：

DGLISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=DGLISTENER))))                # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))))            # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1))))                # line added by Agent
ASMNET1LSNR_ASM=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=ASMNET1LSNR_ASM))))              # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_ASMNET1LSNR_ASM=ON               # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_ASMNET1LSNR_ASM=SUBNET         # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON                # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_LISTENER_SCAN1=OFF             # line added by Agent - Disabled by Agent because REMOTE_REGISTRATION_ADDRESS is set
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON              # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_LISTENER=SUBNET                # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_DGLISTENER=ON            # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_DGLISTENER=SUBNET              # line added by Agent
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = orcl1)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = orcl_DGMGRL)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = orcl1)
    )
  )
SID_LIST_DGLISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = dgorcl)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = dgorcl1)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = dgorcl_DGMGRL)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = dgorcl1)
    )
  )

节点2添加实例2的名称：

DGLISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=DGLISTENER))))                # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1))))                # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))))            # line added by Agent
ASMNET1LSNR_ASM=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=ASMNET1LSNR_ASM))))              # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_ASMNET1LSNR_ASM=ON               # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_ASMNET1LSNR_ASM=SUBNET         # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON              # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_LISTENER=SUBNET                # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON                # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_LISTENER_SCAN1=OFF             # line added by Agent - Disabled by Agent because REMOTE_REGISTRATION_ADDRESS is set
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_DGLISTENER=ON            # line added by Agent
VALID_NODE_CHECKING_REGISTRATION_DGLISTENER=SUBNET              # line added by Agent
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = orcl2)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = orcl_DGMGRL)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = orcl2)
    )
  )  
SID_LIST_DGLISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = dgorcl)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = dgorcl2)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = dgorcl_DGMGRL)
      (ORACLE_HOME = /oracle/app/oracle/product/19c/dbhome_1)
      (SID_NAME = dgorcl2)
    )
  )

重启监听：

srvctl stop listener -l LISTENER
srvctl stop listener -l DGLISTENER
srvctl start listener -l LISTENER
srvctl start listener -l DGLISTENER

检查服务：

lsnrctl status LISTENER
lsnrctl status DGLISTENER

3.oracle用户添加tnsnames.ora

两个节点内容一致，设置如下：

[oracle@rac1 admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /oracle/app/oracle/product/19c/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
scan-orcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
scan-dgorcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = dgorcl)
    )
  )
scan_orcl_pdb =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pdb)
    )
  )
scan_dgorcl_pdb =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pdb)
    )
  )
scan_orcl_jyc =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = jyc)
    )
  )
scan_dgorcl_jyc =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = rac-scan)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = jyc)
    )
  )
orcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

dgorcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 2521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = dgorcl)
    )
  )
tns_orcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

tns_dgorcl =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 2521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = dgorcl)
    )
  )
orcl_pdb =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pdb)
    )
  )  
dgorcl_pdb =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 2521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = pdb)
    )
  )
orcl_jyc =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = jyc)
    )
  )
dgorcl_jyc =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 2521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 2521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = jyc)
    )
  )

tnsping 服务名测试，确认OK：

[oracle@rac1 admin]$ tnsping orcl

TNS Ping Utility for Linux: Version 19.0.0.0.0 - Production on 31-JUL-2020 11:22:18

Copyright (c) 1997, 2020, Oracle.  All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl)))
OK (0 msec)
[oracle@rac1 admin]$ tnsping dgorcl

TNS Ping Utility for Linux: Version 19.0.0.0.0 - Production on 31-JUL-2020 11:22:21

Copyright (c) 1997, 2020, Oracle.  All rights reserved.

Used parameter files:

Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.183)(PORT = 2521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.52.184)(PORT = 2521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = dgorcl)))
OK (0 msec)

4.修改LOCAL_LISTENER、remote_listener

增加scan listener端口

srvctl modify scan_listener -endpoints "TCP:1521/TCP:2521"

节点1：
export ORACLE_SID=orcl1
sqlplus / as sysdba
alter system set local_listener ='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.52.183)(PORT=1521))' scope=both sid='orcl1';
alter system set remote_listener ='rac-scan:1521' scope=both sid='orcl1';
export ORACLE_SID=dgorcl1
sqlplus / as sysdba
alter system set local_listener ='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.52.183)(PORT=2521))' scope=both sid='dgorcl1';
alter system set remote_listener ='rac-scan:2521' scope=both sid='dgorcl1';

节点2：
export ORACLE_SID=orcl2
sqlplus / as sysdba
alter system set local_listener ='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.52.184)(PORT=1521))' scope=both sid='orcl2';
alter system set remote_listener ='rac-scan:1521' scope=both sid='orcl2';
export ORACLE_SID=dgorcl2
sqlplus / as sysdba
alter system set local_listener ='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.52.184)(PORT=2521))' scope=both sid='dgorcl2';
alter system set remote_listener ='rac-scan:2521' scope=both sid='dgorcl2';

重启监听：

srvctl stop listener -l LISTENER
srvctl stop listener -l DGLISTENER
srvctl start listener -l LISTENER
srvctl start listener -l DGLISTENER

检查服务,确认端口1521只监听主库的服务，2521只监听备库的服务，基本就没问题了。一般测试过程结合数据库后台日志alert查看是否有异常，根据问题再排查处理即可。

lsnrctl status LISTENER
lsnrctl status DGLISTENER

5.测试连接：

sqlplus sys/oracle@orcl as sysdba
sqlplus sys/oracle@dgorcl as sysdba
sqlplus jyc/jyc@dgorcl_pdb
sqlplus jyc/jyc@dgorcl_jyc

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

SQL*Plus: Release 19.0.0.0.0 - Production on Fri Jul 31 11:27:13 2020
Version 19.8.0.0.0

Copyright (c) 1982, 2020, Oracle.  All rights reserved.

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.8.0.0.0

SQL> show parameter name;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
cdb_cluster_name                     string
cell_offloadgroup_name               string
db_file_name_convert                 string      +DATA, +DATA
db_name                              string      orcl
db_unique_name                       string      dgorcl
global_names                         boolean     FALSE
instance_name                        string      dgorcl1
lock_name_space                      string
log_file_name_convert                string      +DATA, +DATA
pdb_file_name_convert                string
processor_group_name                 string

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
service_names                        string      dgorcl
SQL> select INSTANCE_NUMBER from v$instance;

INSTANCE_NUMBER
---------------
              1

SQL> conn jyc/jyc@dgorcl_pdb
ERROR:
ORA-01109: database not open

Warning: You are no longer connected to ORACLE.
SQL> conn jyc/jyc@dgorcl_pdb
ERROR:
ORA-01109: database not open

SQL> conn jyc/jyc@dgorcl_jyc
ERROR:
ORA-01109: database not open

SQL> conn sys/oracle@dgorcl as sysdba
Connected.
SQL> show pdbs;

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            MOUNTED
         4 JYC                            MOUNTED
SQL> alter pluggable database all open instances=all;

Pluggable database altered.

SQL> show pdbs;

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB                            READ ONLY  NO
         4 JYC                            READ ONLY  NO
SQL> alter database recover managed standby database using current logfile disconnect;

Database altered.

SQL> set line 160
SQL> set wrap off
SQL> col inst_id for 99
SQL> col FORCE_LOGGING for a4
SQL> select INST_ID, dbid,name,DB_UNIQUE_NAME,current_scn,protection_mode,database_role,force_logging,open_mode,switchover_status from gv$database

INST_ID       DBID NAME      DB_UNIQUE_NAME                 CURRENT_SCN PROTECTION_MODE      DATABASE_ROLE    FORC OPEN_MODE            SWITCHOVER_STATUS
------- ---------- --------- ------------------------------ ----------- -------------------- ---------------- ---- -------------------- --------------------
      1 1574560670 ORCL      dgorcl                             4477548 MAXIMUM PERFORMANCE  PHYSICAL STANDBY YES  READ ONLY WITH APPLY NOT ALLOWED
      2 1574560670 ORCL      dgorcl                             4477548 MAXIMUM PERFORMANCE  PHYSICAL STANDBY YES  READ ONLY WITH APPLY NOT ALLOWED

SQL> conn sys/oracle@orcl as sysdba
Connected.
SQL> select INST_ID, dbid,name,DB_UNIQUE_NAME,current_scn,protection_mode,database_role,force_logging,open_mode,switchover_status from gv$database;

INST_ID       DBID NAME      DB_UNIQUE_NAME                 CURRENT_SCN PROTECTION_MODE      DATABASE_ROLE    FORC OPEN_MODE            SWITCHOVER_STATUS
------- ---------- --------- ------------------------------ ----------- -------------------- ---------------- ---- -------------------- --------------------
      2 1574560670 ORCL      orcl                               4477580 MAXIMUM PERFORMANCE  PRIMARY          YES  READ WRITE           TO STANDBY
      1 1574560670 ORCL      orcl                               4477580 MAXIMUM PERFORMANCE  PRIMARY          YES  READ WRITE           TO STANDBY

SQL> conn jyc/jyc@dgorcl_pdb
Connected.
SQL> conn jyc/jyc@dgorcl_jyc
Connected.
SQL>