Using the LIST.DBDSGRP command
Use the DBRC LIST.DBDSGRP command to display the recovery group for a database.
In the following example, the members of a specified DBDS group are displayed:
//LISTDBGP JOB
//S01 EXEC PGM=DSPURX00,...
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//SYSIN DD *
LIST.DBDSGRP GRPNAME(DBDSG1)
/*