OUTBUFF—Output log buffer size


Use the Modify Log Output Buffer Pool Size panels or the OUTBUFF command to specify the buffer size of the output log. This is the amount of storage that the Log Manager uses when writing data to active log data sets.

The Log Manager constructs 4-KB buffers. The value that you specify is the total number of KBs, and the value must be a multiple of four. For delta amounts, batch and MVS console issued commands must be a multiple of four. If the value is not a multiple of four, the value is rounded to the nearest multiple of four.

Modify Log Output Buffer Pool Size panel

DDTG DBI1 Modify Log Output Buffer Pool Size
Command ===> _________________________________________________________________

Command: CURRENT
Description . . . . . . . . : LOG OUTPUT BUFFER SIZE

Type the new log output buffer pool size that you wish to change to. Then press Enter.

Log Output Buffer Pool Size
Buffer Pool Size . . . . . . _______ (40 to 400000 Kilobytes) or delta, and
must be a multiple of 4

Command syntax and parameters

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Value

Description

DB2ssid

Db2 subsystem ID or the name of the Db2 data sharing group to which the command applies.

opertuneID

OPERTUNE system profile name (if OPERTUNE is running as a started task) or the batch job name (if OPERTUNE is running as a batch job).

value

Buffer size of the output log (in kilobytes). Specify one of the following values:

  • A numerical value in the range 40–400000 (in multiples of 4)
  • A delta value
    Delta values are expressed numerically (+nn or -nn). The resulting value must fall in the range 40–400000 and be a multiple of 4. If the value specified is not a multiple of 4, OPERTUNE will round to the nearest valid value.

NORESET

The changes you request remain in effect until the Db2 subsystem is cycled.

Db2 parameter values

Field

Installation panel

CLIST parameter

ZPARM macro

ZPARM parameter

Buffer Pool Size

DSNTIPL

LOGOUTPT

DSN6LOGP

OUTBUFF

 

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OPERTUNE for DB2 12.1