Hitachi

Hitachi Advanced Database Setup and Operation Guide


6.3.14 Determining the memory requirement for executing the adbchgchunkcomment command

When you execute the adbchgchunkcomment command, the HADB server uses the following type of memory:

■ Shared memory
  • Process common memory (PROC_CHGCCMSZ)

Use the following formula to determine the process common memory (PROC_CHGCCMSZ) used to execute the adbchgchunkcomment command.

Formula (kilobytes)
PROC_CHGCCMSZ= Σ(5 + DIC + PROC_AUDINFSZ#1)#2
#1

Add this value when the audit trail facility is enabled.

#2

If you execute multiple adbchgchunkcomment commands concurrently, determine the memory requirement for each adbchgchunkcomment command. Then, add up the total memory requirements.

Explanation of variables

DIC

Memory for acquiring the definition information of the table to be processed

Determine the value by referring to the explanation of the variable DIC in (a) Determining the variable PROC_IMPT in (1) Determining the process common memory requirement (for executing the adbimport command) in 6.3.6 Determining the memory requirement for executing the adbimport command.

PROC_AUDINFSZ

Determine the value of the variable PROC_AUDINFSZ according to (r) Determining the variable AUDINF in (3) Determining the process common memory requirement (for starting the HADB server) under 6.3.3 Determining the memory requirement for starting the HADB server.