WCCOAui - SYS/SEVERE - Online-Backup of database "DPE-name" Cannot answer or handle request
Enclosed you'll find the explanation for a log-message which can occur during runtime when trying to read historical information from the database. The log-message is written to the PVSS_II.log-file.
WCCOAui (1), 2014.03.16 05:12:51.521, SYS, SEVERE, 113, Online-Backup of database, DP: System1:Engine1.speed:_offline.._value, MAN: (SYS:1 Data -num 0 CONN: 1), Cannot answer or handle request
Log-message with symbolic names:
WCCOAui (1), <TIMESTAMP>, SYS, SEVERE, 113, Online-Backup of database, DP: <DPE-name>, MAN:
(SYS:1 Data -num 0 CONN: 1), Cannot answer or handle request
This log-messages describes that reading historical information from the database was not possible because at the same time an online-backup or a recovery of the database in a redundant system (similar to an online backup) is made.
While the backup is processed accessing the database files is not possible and therefore historical information cannot be read.