plsql developer連線oracle 12.2報錯 ora-28040 No matching authentication protocol
使用plsql連線時,發現報ora-28040 No matching authentication protocol
趕緊查了查MOS,原來在預設情況下Oracle12.2對客戶端版本有限制,
解決方法:升級Oracle客戶端或者修改sqlnet.ora中的以下兩個引數控制:
SQLNET.ALLOWED_LOGON_VERSION_SERVER=10
SQLNET.ALLOWED_LOGON_VERSION_CLIENT=10
select username, account_status, default_tablespace, created, password_versions from dba_users;
USERNAME ACCOUNT_STATUS DEFAULT_TABLESPACE CREATED PASSWORD_VERSIONS
--------------- ---------------------------------------------------------------- ------------------------------------------------------------ ------------ ----------------------------------
SYS OPEN SYSTEM 26-JAN-17 10G 11G 12C
SYSTEM OPEN SYSTEM 26-JAN-17 10G 11G 12C
password_versions表明當前使用者口令的認證方式.