This command means to export the RSGL? GB? New library (password is RSGL). Operation location: database to be backed up, DOS window. It is equivalent to copying the corresponding database instance on the server to the local. In the actual work, we meet a requirement: we need to back up the database on the server and import it into our own database. Only the backup and restore methods of export / import are recorded here. Export / import is a logical backup, while hot and cold backups are physical backups. They are export / import, hot backup, and cold backup. There are three ways to restore an Oracle backup.
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