Restore backup problem

Question

Restore backup problem

tofublock opened this issue 7 years ago · comments

Hi,
I'm trying to restore my calendar tables. When I do that, Ownbackup says "Restoring your tables" but nothing happens. When I just try to restore "oc_calendarobjects", I get
Table(s) could not be restored: Inserting data row failed: An exception occurred while executing 'INSERT INTO oc_calendarobjects (id,calendardata,uri,calendarid,lastmodified,etag,size,componenttype,firstoccurence,lastoccurence,uid) SELECT ?,?,?,?,?,?,?,?,?,?,? FROM oc_calendarobjectsWHEREid= ? ANDcalendardata= ? ANDuri= ? ANDcalendarid= ? ANDlastmodified= ? ANDetag= ? ANDsize= ? ANDcomponenttype= ? ANDfirstoccurence= ? ANDlastoccurence= ? ANDuid= ? HAVING COUNT(*) = 0' with params ["1", "BEGIN:VCALENDAR\r\nPRODID:-\/\/Mozilla.org\/NONSGML Mozilla Calendar [...]
Can somebody help me on this? Is there a manual way to restore the tables?
Thanks!
Ah, right: Owncloud 9.0.5 on Ubuntu 14.04 server with Apache 2.4.7 and mysql 14.14.
More info: No updates in between backup (today) and my attempt at restoring. Same tables, same everything.

Patrizio Bekerle · Answer 1 · Tue Mar 14 2017 02:25:12 GMT+0800 (China Standard Time)

Doesn't ring any bell for me... ownbackup uses the internal ownCloud api to store and restore tables, maybe the api doesn't recognises some data.

tofublock · Answer 2 · Tue Mar 14 2017 02:26:38 GMT+0800 (China Standard Time)

Thanks for the quick response. So - no hints on where to go from here?

Patrizio Bekerle · Answer 3 · Tue Mar 14 2017 02:34:48 GMT+0800 (China Standard Time)

Once someone had troubles with longblob fields, I posted that as ownCloud issue at owncloud/core#25316.

tofublock · Answer 4 · Tue Mar 14 2017 17:09:12 GMT+0800 (China Standard Time)

Hm, that looks a lot like my error. That means I'm out of luck for now. Is there a way to extract the backup to a format I can work with manually?

Patrizio Bekerle · Answer 5 · Tue Mar 14 2017 17:23:37 GMT+0800 (China Standard Time)

If you had the problem from the issue you could try to edit your data/ownbackup/1489393802/oc_calendarobjects/structure.xml (use your timestamp instead of 1489393802) and set the longblob field to something like <type>clob</type><notnull>false</notnull>.

Other than that you would have to consult ownCloud for their (private) api...

tofublock · Answer 6 · Tue Mar 14 2017 17:37:33 GMT+0800 (China Standard Time)

Not that I can really break more at this point, but could you tell me exactly which tag to change, please?
Here's the full error:

Table(s) could not be restored: Inserting data row failed: An exception occurred while executing 'INSERT INTO oc_calendarobjects (id,calendardata,uri,calendarid,lastmodified,etag,size,componenttype,firstoccurence,lastoccurence,uid) SELECT ?,?,?,?,?,?,?,?,?,?,? FROM oc_calendarobjectsWHEREid= ? ANDcalendardata= ? ANDuri= ? ANDcalendarid= ? ANDlastmodified= ? ANDetag= ? ANDsize= ? ANDcomponenttype= ? ANDfirstoccurence= ? ANDlastoccurence= ? ANDuid = ? HAVING COUNT(*) = 0' with params [...CALENDAR ENTRY HERE...]: Column not found: 1054 Unknown column 'calendardata' in 'where clause'

Thanks for all your help and best regards from Vienna to Graz.

tofublock · Answer 7 · Tue Mar 14 2017 17:41:39 GMT+0800 (China Standard Time)

Ah, sorry. I didn't read carefully enough. I'll report back.

tofublock · Answer 8 · Tue Mar 14 2017 17:46:15 GMT+0800 (China Standard Time)

It worked. That was a lifesaver. Thanks so much!
For anyone with the same problem: Changing <field><name>calendardata</name></field> to <field><name>calendardata</name><type>clob</type><notnull>false</notnull></field> fixed the restore problem for me.

Patrizio Bekerle · Answer 9 · Tue Mar 14 2017 17:57:50 GMT+0800 (China Standard Time)

It took me several hours to reverse engineer that back then, I'm glad my findings were of use to you. 😄