Oracle data loss due to Chinese character set

cmd window

• sqlplus sys/sys@orcl as sysdba
• SQL>shutdown immediate
• SQL>STARTUP MOUNT
• SQL>ALTER SYSTEM ENABLE RESTRICTED SESSION;
• SQL>ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
• SQL>ALTER SYSTEM SET AQ_TM_PROCESSES=0;
• SQL>ALTER DATABASE OPEN;
• SQL>ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK;
• SQL>shutdown immediate;
• SQL>STARTUP;

Enable monitoring and service cmd

• lsnrctl start
• net start OracleServiceORCL