DSNB776I   SYNCHRONOUS WRITES CHANGED PAGES = w1 CLEAN PAGES = w2

Explanation

This message is a section of output from the DISPLAY GROUPBUFFERPOOL command, which is part of message DSNB750I.

DSNB776I: Synchronous write statistics

If the DISPLAY GROUPBUFFERPOOL command included the MDETAIL option, the output includes synchronous write statistics for the group buffer pool. The term synchronous means that the coupling facility interaction is done under the execution unit of the DB2® user. 

DSNB776I -   SYNCHRONOUS WRITES
               CHANGED PAGES                           = w1
               CLEAN PAGES                             = w2
w1
The number of changed pages that were written synchronously to the coupling facility.
w2
The number of clean pages that were written synchronously to the coupling facility.