使用validate验证数据检查数据坏块
You can use the VALIDATE command to manually check for physical and logical
corruptions in database files. This command performs the same types of checks as
BACKUP VALIDATE, but VALIDATE can check a larger selection of objects. For
example, you can validate individual blocks with the VALIDATE DATAFILE ...
BLOCK command.
When validating whole files, RMAN checks every block of the input files. If the
backup validation discovers previously unmarked corrupt blocks, then RMAN
updates the V$DATABASE_BLOCK_CORRUPTION view with rows describing the
corruptions.
Use VALIDATE BACKUPSET when you suspect that one or more backup pieces in a
backup set are missing or have been damaged. This command checks every block in a
backup set to ensure that the backup can be restored. If RMAN finds block corruption,
then it issues an error and terminates the validation. The command VALIDATE
BACKUPSET enables you to choose which backups to check, whereas the VALIDATE
option of the RESTORE command lets RMAN choose.
corruptions in database files. This command performs the same types of checks as
BACKUP VALIDATE, but VALIDATE can check a larger selection of objects. For
example, you can validate individual blocks with the VALIDATE DATAFILE ...
BLOCK command.
When validating whole files, RMAN checks every block of the input files. If the
backup validation discovers previously unmarked corrupt blocks, then RMAN
updates the V$DATABASE_BLOCK_CORRUPTION view with rows describing the
corruptions.
Use VALIDATE BACKUPSET when you suspect that one or more backup pieces in a
backup set are missing or have been damaged. This command checks every block in a
backup set to ensure that the backup can be restored. If RMAN finds block corruption,
then it issues an error and terminates the validation. The command VALIDATE
BACKUPSET enables you to choose which backups to check, whereas the VALIDATE
option of the RESTORE command lets RMAN choose.
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29802484/viewspace-1995002/ ，如需转载，请注明出处，否则将追究法律责任。
下一篇：
关于数据库字符集
请登录后发表评论
登录
全部评论
