Integer prefix multiplier
64K
Purpose
The BackupBlockSize parameter specifies the buffer and I/O (input‑output) size to be used for reading database files during backup processing.
You can set the block size to values in the range 64K through 512K bytes.
Parameter is read when …
The backup process begins.
Hint
Increasing the value of this parameter may improve performance if your machine has a substantial amount of available memory, depending on the mix of active applications. This parameter enables you to decide the values that provide the best trade‑off between CPU and memory utilization and the time taken to perform the backup operation.