problems with the database are causing kmail to be totally unusable. My symptoms include but are not limited to: some emails are being "duplicated" - the duplicate entry causes "unable to fetch......" which kills archiving, filtering and viewing of messages. kmail cannot be used without these functions. another symptom: "org.kde.pim.akonadi_indexer_agent: Database Corrupted - What did you do?". I cannot resolve this error: if i delete the database and restart akonadi then the error comes right back.
I have similar symptomps with kmail (kontact 5.15.1 (20.08.1), KDE Frameworks 5.47.0 on Arch Linux. Apart of mail duplication, the akonadi server consumes all the memory after some time ... Here is a part of the log obtained when `akonadictl restart` is called (is it safe to send it whole?): org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950303b30) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950303b30) ) org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f69502afe90) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f695020df90) identified as "AgentBaseChangeRecorder - 94582020480560" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950303b30) identified as "Archive Mail Kernel ETM - 94582020541536" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f69502afe90) identified as "ArchiveMailCollectionMonitor - 94582020801040" org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950306c30) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950306c30) identified as "SpecialCollectionsMonitor - 94167298158096" org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950311c90) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f695020dc40) identified as "AgentBaseChangeRecorder - 94321149800128" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950270b20) identified as "AgentBaseChangeRecorder - 94041219792608" org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950311c90) identified as "UnifiedMailboxChangeRecorder - 140722923724944" terminate called after throwing an instance of 'Xapian::DatabaseModifiedError' org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f695022b260) identified as "AgentBaseChangeRecorder - 94159610622528" org.kde.kgapi: Unauthorized. Access token has expired or is invalid. org.kde.pim.google: Got error: KGAPI2::CalendarFetchJob(0x55a33e2bc560) "Neplatné ověření." org.kde.kgapi: Unauthorized. Access token has expired or is invalid. org.kde.pim.google: Got error: KGAPI2::TaskListFetchJob(0x55a33e2a7dc0) "Neplatné ověření." org.kde.kgapi: Unauthorized. Access token has expired or is invalid. org.kde.pim.google: Got error: KGAPI2::ContactsGroupFetchJob(0x55a33e25c040) "Neplatné ověření." org.kde.pim.akonadiserver: Subscriber "AgentBaseChangeRecorder - 94510664681936" disconnected org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed! 1 restarts left. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950190250) ) org.kde.pim.akonadi_indexer_agent: Database Corrupted - What did you do? org.kde.pim.akonadi_indexer_agent: org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950190250) identified as "AgentBaseChangeRecorder - 94316572205968" terminate called after throwing an instance of 'Xapian::DatabaseModifiedError' org.kde.pim.akonadiserver: Subscriber "AgentBaseChangeRecorder - 94316572205968" disconnected org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed! 0 restarts left. org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f6950334170) ) org.kde.pim.akonadi_indexer_agent: Database Corrupted - What did you do? org.kde.pim.akonadi_indexer_agent: org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f6950334170) identified as "AgentBaseChangeRecorder - 94020415634304" terminate called after throwing an instance of 'Xapian::DatabaseModifiedError' org.kde.pim.akonadiserver: Subscriber "AgentBaseChangeRecorder - 94020415634304" disconnected org.kde.pim.akonadicontrol: ProcessControl: Application "/usr/bin/akonadi_indexing_agent" stopped unexpectedly ( "Process crashed" ) org.kde.pim.akonadicontrol: Application '/usr/bin/akonadi_indexing_agent' crashed too often. Giving up! org.kde.pim.akonadiserver: New notification connection (registered as Akonadi::Server::NotificationSubscriber(0x7f69501b44e0) ) org.kde.pim.akonadiserver: Subscriber Akonadi::Server::NotificationSubscriber(0x7f69501b44e0) identified as "SpecialCollectionsMonitor - 94220474320960" QIODevice::write (QSslSocket): device not open org.kde.pim.akonadiserver.search: Executing search "searchUpdate-1602405199" org.kde.pim.akonadiserver.search: Search "searchUpdate-1602405199" done (without remote search) org.kde.pim.akonadiserver.search: Search update for collection "OpenInvitations" ( 62 ) finished: all results: 0 , removed results: 0 org.kde.pim.akonadiserver.search: Executing search "searchUpdate-1602405199" org.kde.pim.akonadiserver.search: Search "searchUpdate-1602405199" done (without remote search) org.kde.pim.akonadiserver.search: Search update for collection "DeclinedInvitations" ( 63 ) finished: all results: 0 , removed results: 0 org.kde.pim.kimap: Connection to server lost QAbstractSocket::UnknownSocketError