AHL906I
THE OUTPUT BLOCK SIZE OF blksize WILL BE USED FOR OUTPUT DATA SETS: dsname1dsname16

Explanation

This lists the output data sets that will be used by the trace writer and the single block size that will be used for each one.

In the message text:
blksizeK
The output block size.
dsname1dsname16
The name(s) of the data set(s).

System action

Trace writer initialization continues.

Source

Generalized trace facility (GTF)

Module

AHLWINIT