BAR_CKPTSEC_TIMEOUT configuration parameter

The BAR_CKPTSEC_TIMEOUT configuration parameter specifies the amount of time, in seconds, that an RS secondary server should wait for a checkpoint to arrive from the primary server while performing an external backup.

onconfig.std value
  • UNIX™: 15
  • Windows™: 16
default value
  • UNIX™: 15
  • Windows™: 16
units
seconds
range of values
5 through twice the value of the CKPTINTVL configuration parameter
takes effect
After you edit your onconfig file and restart the database server.
When you reset the value dynamically in your onconfig file by running the onmode -wf command.
When you reset the value in memory by running the onmode -wm command.

Usage

When an external backup is performed on an RS secondary server, the secondary server must wait until a checkpoint arrives in the logical logs from the primary server. A checkpoint flushes buffers to disk, and blocks user transactions that involve temporary tables. If the checkpoint on the primary does not complete in the time-out period, the backup on the RS secondary server fails. You can set the BAR_CKPTSEC_TIMEOUT configuration parameter to a longer amount of time, in seconds, that an RS secondary server should wait for a checkpoint to arrive from the primary server while performing an external backup.