Wait Event – control file sequential read

Reading from the control file. This happens often. For example, while:
  • Making a backup of the control files
  • Sharing information (between instances) from the control file
  • Reading other blocks from the control files
  • Reading the header block

Wait Time: The wait time is the elapsed time of the read


Parameter Description
file# The control file from which the session is reading
block# Block number in the control file from where the session starts to read. The block size is the physical block size of the port (usually 512 bytes, some UNIX ports have 1 or 2 Kilobytes).
blocks The number of blocks that the session is trying to read

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