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Änderungsprotokolle

Im folgenden sind die letzten Änderungen der verschiedenen Softwarepakete aufgeführt.

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Kategorie Datum Version Eintrag
cego 11.01.2026 2.54.0 Reduction of following classes done : CegoDistManager ( now CegoQueryManager ), CegoDistCursor ( now CegoQueryCursor ), CegoDbHander ( CegoDistDbHandler is obsolete ), just straight query handling is supported now, no more distributed queries
Reduction of admin classes done : CegoAdminHandler, CegoAdminThread, CegoAdmAction and friends, all mediator services have been consolidated to native admin services
Still some code cleanup needed, but already a huge amount of code has been removed.
cego 10.01.2026 2.54.0 Thoughts about redesign of cego mode started. The current design with mediator/primary/secondary with synchronous logging to secondary seems to be to complicated and fragile.
A new approach might be to make secondary recovery based on complete archive logfiles, which are copied from primary to secondary asynchronously.
The secondary host then must be controlled by himself ( no more mediator role ), so the complete database switch to secondary ist managed by an upper layer ( maybe not part of cego, since this also includes switch of a virtual host )
As a consequence, the cego mediator role will disappear ( just primary and secondary role are valid )
cego 09.01.2026 2.53.9 Removed PIDFILE attribute from db xml. PIDFILE should be specified by database startup with pidfile option
cego 03.01.2026 2.53.8 Version released
cego 03.01.2026 2.53.8 Small patch added to CegoAdminThread::getBackupInfo. Also empty logTS token are accepted now, since there might be still no archive logs avaiable for the backup
In tools/backupManager, LOGTS was set to None, if no archive logs are available
cego 01.01.2026 2.53.7 Version released
cego 01.01.2026 2.53.7 Cleanup and reduction of logging in CegoRecoveryManager
cego 31.12.2025 2.53.7 Small improvement added to CegoAdmin to catch non existing batchfile exception
cego 30.12.2025 2.53.6 Version released
cego 29.12.2025 2.53.6 Added point in time recovery option to restore nut just pit ( timestamp ) but also to a specified lsn. This might be useful to restore exactly to a specific log entry ( timestamp is given in seconds, where multiple operations may occur )
cego 29.12.2025 2.53.6 Added shiftactive mode for cego to rescue active online redo logs to archive destination. This is useful in case of online backup recovery after a crash, so before starting recovery, the current active online redo log can be explicit shifted.
With the shift, the latest LSNs are catched and a full recovery can take place.
Please note : This option is just useful, if there are uncorrupted online redo logfiles available after the crash.
cego 28.12.2025 2.53.6 Small improvements added to backupManager tool to evaluate next backup id ( now via shell function )
cego 26.12.2025 2.53.5 Version released
cego 26.12.2025 2.53.5 Crash consistency checks ( checkCrashAndRecovery with 20 runs and checkRandonCrash with 200 runs ) passed
cego 26.12.2025 2.53.5 Patch added in CegoDistManager::startTableSet, final checkpoint must be written after starting log, otherwise no logswitch will be done
cego 25.12.2025 2.53.5 Basic backup recovery with heavy load, concurrent online backup and recovery up to last committed lsn passed !
cego 25.12.2025 2.53.5 In CegoRecoveryManager, changed order in recovery procedure. Datafile recovery must be done after file registration, but before object registration.
File recovery restores bitmaps and pages on file level and object registration loads pages into bufferpool. So we first have to update data files ( via dataFileRecovery ) and then these pages are loaded to bufferpool ( via registerObjects ).
cego 24.12.2025 2.53.5 Basic tableset recovery from online backup works. To treat th e 0-LSN-Sync logic, several adaptions for CegoRecoveryManager were necessary. Still missing are extensive crash recovery tests
cego 24.12.2025 2.53.5 Set LSN for LOGREC_SYNC operations to 0. This is useful to simplify the recovery process especially for backup recoveries. With previous logic, LSN gaps occur in the archive log history file ( caused by LSN handling in CegoTableManger::insertDataTable with previous allocated LSN ) which result in incomplete recoveries.
The change to LOGREC_SYNC=0 had some impacts for logfile and recovery handling done in CegoLogThreadPool::copyLog, CegoDistManager::startTableSet and CegoLogManager::logAction
The new logic also avoids unnecessary archive logs with only LOGREC_SYNC operations, since these files are skipped by copyLog now. This new logic still has to be verified, especially in combination with online backups und subsequent recoveries
cego 23.12.2025 2.53.5 Added patch in CegoLogManager::logAction, logfile should be flushed if LOG_FULL occurs, otherwise it seems, that log entries get lost with subsequent log file switch ( still not verified )