[Bug 273612] Local Folders: Unknown error. (There is no transaction in progress.)

[François Rey]

https://bugs.kde.org/show_bug.cgi?id=273612





--- Comment #5 from François Rey <kde org francois rey name>  2011-07-08 14:38:53 ---
Created an attachment (id=61707)
 --> (http://bugs.kde.org/attachment.cgi?id=61707)
Various logs and config files

I think I'm having this issue, or at least this bug report is the only thing
that comes up when searching google for:
akonadi Database error: DataStore::beginTransaction    Last driver error:
"QMYSQL: Unable to begin transaction"    Last database error: "MySQL server has
gone away"

The above message is filling up akonadiserver.error.
Of particular interest are the following lines at the end of mysql.err:
110708 12:17:38 [Warning] Aborted connection 39 to db: 'akonadi' user:
'francois' host: '' (Got a packet bigger than 'max_allowed_packet' bytes)
110708 15:55:27 [Warning] Aborted connection 47 to db: 'akonadi' user:
'francois' host: '' (Got an error reading communication packets)

This is happening after I upgraded from kdepim 4.4.11.1 -> 4.6.1 on arch linux
64 bit and kde 4.6.3 -> 4.6.5. The migration for contacts and calendars went
fine, however the kmail migration (from maildirs) crashed, so this maybe the
first originating cause. Contacts and Calendar resources seems to be
duplicated, and mail folders seem to have some unread duplicates. Kmail seems
able to retrieve new mail, but I'm unable to access my mail because the preview
pane is stuck on retrieving folder. Kmail seems to be churning out lots of
things, akonadiserver and akonadi_mixedma use 5Gb of RAM, and sometimes
conflict error pop up asking to choose to keep left, right, or both. 
The attached archive contains various log and config files. There's also a
couple kcrash files: the first one occured during the migration process last
night, the second one happened just recently.
I would appreciate very much any pointers in recovering from this situation.
Thanks

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