sqlplus sys@ as sysdba 1521 手动修改srv对应的pdb

++ Connecting via rman to CDB $ROOT and running commands fail with below error showing rman is connected to PDB instead of CDB$ ROOT :

rman target 'sys@"<scan_name>.<domain_name>:1521/<db_unique_name>.<domain_name>:DEDICATED"'

Recovery Manager: Release 12.1.0.2.0 - Production on Wed Jun 7 13:38:56 2023

target database Password:

connected to target database: DBA21CDB (DBID=1393061330)

RMAN> configure compression algorithm 'low';

using target database control file instead of recovery catalog

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of configure command at 06/07/2023 13:39:23

RMAN-07536: command not allowed when connected to a Pluggable Database

++ Connecting from sqlplus using same connect string shows connections are going to PDB instead of CDB$ROOT :

sqlplus 'sys@"<scan_name>.<domain_name>:1521/<db_unique_name>.<domain_name>:DEDICATED" as sysdba'

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED

3 PDB1 READ WRITE NO

++ Output of below query shows service is pointing to PDB (con_id=3) instead of CDB$ROOT :

select name, network_name, con_id# from cdb_service$;

<db_unique_name>.<domain_name> <db_unique_name>.<domain_name> 3 <<<<<<<<<<<<<<<<<<<service is pointing to CON_ID 3

Drop and recreate the service for CDB

sql> update cdb_service$ set con_id#=1 where name='<db_unique_name>.<domain_name> ';

SQL> commit;

srvctl stop databsae -db <db_unique_name>

srvctl start database -db <db_unique_name>

SQL> select name, network_name, con_id# from cdb_service$

<db_unique_name>.<domain_name> <db_unique_name>.<domain_name> 1