OUTBUFF—Output log buffer size - Documentation for OPERTUNE for DB2 12.1

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

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.