查看和修改CDB时区
show CON_NAME

SELECT dbtimezone FROM DUAL;

ALTER DATABASE SET TIME_ZONE=‘Europe/London’;

SHUTDOWN IMMEDIATE;
STARTUP;

SELECT dbtimezone FROM DUAL;

查看和修改PDB时区
ALTER SESSION SET CONTAINER = pdb1;
show pdbs
ALTER PLUGGABLE DATABASE pdb1 OPEN READ WRITE;

SELECT dbtimezone FROM DUAL;

ALTER DATABASE SET TIME_ZONE=‘US/Eastern’;

SHUTDOWN IMMEDIATE;
STARTUP;

ALTER SESSION SET CONTAINER = pdb1;
ALTER PLUGGABLE DATABASE pdb1 OPEN READ WRITE;
SELECT dbtimezone FROM DUAL;



检查当前时区版本
SELECT * FROM v$timezone_file;

SELECT tz_version FROM registry$database;

SELECT property_name, property_value
FROM database_properties
WHERE property_name LIKE ‘DST_%’;

显示时区文件的最新可用版本
SELECT DBMS_DST.get_latest_timezone_version
FROM dual;