一.问题发现 命令行进入数据库实例手动给某张表进行alter操作,发现如下报错. mysql> use xx_xxx; No connection. Trying to reconnect... Connection Current database: *** NONE *** Reading table information for completion of table and column names You can turn off this feature to get a quic…
实验前提:已经做好备份. SQL> col file_name for a50select file_id,file_name from dba_data_files; FILE_ID FILE_NAME---------- --------------------------------------------------4 /home/oracle/app/oradata/orcl/users01.dbf2 /home/oracle/app/oradata/orcl/sysaux01.dbf…