Database Status:What is your broker log file shows, check and post.
DGM-17016: failed to retrieve status for database "QA112STB"
ORA-16664: unable to receive the result from a database
2011-06-10 12:04:04.438 DMON: unable to get FSFO data from "/oracle/11.2.0/product/dbs/dr1QA112PRG.dat"Have you performed any switchover recently? Then is it get failed?
DMON: cannot open configuration fileIs your listener is running? and also check is confiruration file exist ?