When taking a DB2 backup, if you get the following error:
$ db2 backup database <dbname> to /backup compress SQL1224N The database manager is not able to accept new requests, has terminated all requests in progress, or has terminated the specified request because of an error or a forced interrupt. SQLSTATE=00000
Try skipping the check on pages by using the following registry variable.
db2set DB2_BCKP_PAGE_VERIFICATION=OFF db2stop db2start <retry the backup>