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3

High availability and other pratical questions

of creating a 2 TomEE+ frontend servers cluster with ObjectDB server as a backend DB?  Does DB backup backs all objects including indexes? If yes, is there a way to backup data only? And. is there a way to backup specific entities only? What is the overhead of online backup? What is the overhead
Forum
3

Some technical questions

back? Since ObjectDB implements online backups, does it implement something like MVCC, so it can see the data at the time the backup was started (to have consistent backup data)?  Thanks Andrej   > E.g. in ... implements online backups, does it implement something like MVCC, so it can see the data at the time
Forum
3

ClassCastException on closing PersistenceManager

has no errors) with an older backup and the code was running without errors. However it worries me how did ... cannot damage the database, so restarting your application with the same database (instead of a backup ... )   I had to return again to a working backup of the DB. It is quite alarming. I just read ur answer
Forum
3

Need disk usage and delete some old files

, port, username, password, path, false);       what about backup ? can we make backup by only copying objectdb file? if we make backup by objectdb file , will it make problem for future release of objectdb?   You can read about backup on this manual page. If you have questions about backup
Issue
2

Compare two schemas or odb files

For example, if we make a backup of our database it would be helpful to have the possibility to compare the backup schema (odb file) with the current version in the database and as result ... graphs stored in the db with old graphs from backup db. PG zmirc
Issue
2

Query fails with failed to read

. At least issue 1682 is related to online backup and was fixed in version 2.6.3. Are you using online backup when the exception is thrown? Any other special activity at that time? Please post a full stack ... ).   we have it now 5-10 times per day. There is not any backup activity active during these times
Result
2

ObjectDB version 2.6.3

for very large transactions (feature request #1658). Fixed an online backup bug (no access during backup operation). Fixed JOIN FETCH bugs. Fixed a performance issue with mapped by fetch. Fixed
Issue
2

[ObjectDB 2.6.9] Unexpected exception (Error 990)

of data 100GB I am running a Doctor in prod (in a backup file, It takes long time...), . PRODUCTION ... . New database copy is ready at: backup\201703291624\pcsodbcsv_new.odb Doctor found problems in
Forum
2

best practice for DB recovery

to recover from a failed instance would be to simply stop all writing, take a backup from the working instance(that will make sure all transactions are committed) and then copy the backup to the failed
Issue
2

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

. Another thing that you can do is frequent online backups followed by a Doctor check of the backup files