damchdef logical-file-name threshold-for-the-number-of-cache-blocks

The damchdef command dynamically sets a threshold for the number of cache blocks during online operation.

logical-file-name~<identifier of 1 to 8 characters>

Specify the name of a logical file for which you want to set a threshold for the number of cache blocks. The logical file to be specified must be in the logical shutdown status.

threshold-for-the-number-of-cache-blocks~<unsigned integer>((0-4000000))

Specify a threshold for the number of cache blocks managed by a single DAM file.

Message ID	Description	Output destination
KFCA01650-E	The specified command argument is incorrect.	Standard error output
KFCA01651-E	The name of the logical file exceeded 8 characters.	Standard error output
KFCA01670-E	The applicable logical file is not found.	Standard error output
KFCA01679-E	The DAM service is not started.	Standard error output
KFCA02568-I	Help message	Standard output
KFCA02571-E	The specified threshold for the number of cache blocks is invalid.	Standard error output

• The damchdef command is valid only for logical files shut-down logically.
• The threshold specified using the damchdef command is only valid while the target logical file is online. If you delete the target logical file from online operation using the damrm command, the specified threshold becomes invalid.