1. 配置CDB 实例参数，影响CDB与所有 PDB
为CDB配置例程参数相对于对于非CDB的数据库是变化不太。ALTER SYSTEM命令用于设置初始化参数，与使用ALTER DATABASE命令修改一些数据库配置。ALTER SYSTEM SET parameter_name=value CONTAINER=ALL;说明：使用CONTAINER=ALL后，cdb与pdbs这个参数相同。pdbs可以在本地设置同一参数为不同值，将覆盖CONTAINER=ALL设定的值。2. 修改 CDB ALTER DATABASE 命令和non-CDB 数据库是一样的，但是有些可以影响CDB 和所有的PDB，有些仅对 cdb 有效，具体看官网吧！3. 配置PDB 实例参数如果在cdb中设置CONTAINER=ALL，那么PDB的参数也会继承之前的值，但可以通过ALTER SYSTEM在PDB container中修改 PDB local parameter，将覆盖(优先)从CDB继承的参数。 3.1 查看pdbs支持修改的参数show con_name;col value for a30；col name for a35；select name, value from v$system_parameter WHERE ispdb_modifiable = 'TRUE' order by name;3.2 修改 PDB 实例参数alter system set parameter_name=value; ->等价于 ALTER SYSTEM SET parameter_name=value CONTAINER=CURRENT;4.修改PDB CONN / AS SYSDBAALTER SESSION SET CONTAINER = pdb1;-- Default edition for PDB.ALTER PLUGGABLE DATABASE DEFAULT EDITION = ora$base;-- Default tablespace type for PDB.ALTER PLUGGABLE DATABASE SET DEFAULT BIGFILE TABLESPACE;ALTER PLUGGABLE DATABASE SET DEFAULT SMALLFILE TABLESPACE;-- Default tablespaces for PDB.ALTER PLUGGABLE DATABASE DEFAULT TABLESPACE users;ALTER PLUGGABLE DATABASE DEFAULT TEMPORARY TABLESPACE temp;-- Change the global name. This will change the container name and the-- name of the default service registered with the listener.ALTER PLUGGABLE DATABASE OPEN RESTRICTED FORCE;ALTER PLUGGABLE DATABASE RENAME GLOBAL_NAME TO pdb1a.localdomain;ALTER PLUGGABLE DATABASE CLOSE IMMEDIATE;ALTER PLUGGABLE DATABASE OPEN;-- Time zone for PDB.ALTER PLUGGABLE DATABASE SET TIME_ZONE='GMT';-- Make datafiles in the PDB offline/online and make storage changes.ALTER PLUGGABLE DATABASE DATAFILE '/u01/app/oracle/oradata/cdb1/pdb1/pdb1_users01.dbf' OFFLINE;ALTER PLUGGABLE DATABASE DATAFILE '/u01/app/oracle/oradata/cdb1/pdb1/pdb1_users01.dbf' ONLINE;ALTER PLUGGABLE DATABASE DATAFILE '/u01/app/oracle/oradata/cdb1/pdb1/pdb1_users01.dbf' RESIZE 1G AUTOEXTEND ON NEXT 1M;-- Supplemental logging for PDB.ALTER PLUGGABLE DATABASE ADD SUPPLEMENTAL LOG DATA;ALTER PLUGGABLE DATABASE DROP SUPPLEMENTAL LOG DATA;