Which Blocks Will RMAN Check For Corruption Or Include In A Backupset?
(Doc ID 561010.1)
Last updated on OCTOBER 28, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 8.0.3 to 11.1]
Oracle Database - Enterprise Edition - Version 126.96.36.199 to 188.8.131.52 [Release 8.0.6 to 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
The goal of this document is to explain which blocks a RMAN checks for corruption, the difference in which blocks are checked when the "validate" clause is used with a RMAN backup, and which blocks are placed into RMAN backupsets.
Background: A RMAN backup causes RMAN to read blocks into memory, write these blocks to another part of memory, check these blocks for corruption during the memory to memory write, then write these blocks to the output device (tape or disk). If the "validate" clause is used with a RMAN backup, the same process occurs but RMAN does NOT write the block to the output device.
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