---------------------------------------------------------------------- ELOQUENCE B.08.20 - patch PE82-1506230 ---------------------------------------------------------------------- This patch adds enhancements or fixes defects of the eloqdb server as released with Eloquence B.08.20. This patch will be integrated in the Eloquence B.08.20 release. Eloquence B.08.20 must be installed before applying this patch. Severity: PE82-1506230: BUG FIX Superseded patches: PE82-1501300: BUG FIX PE82-1411100: BUG FIX PE82-1410010: BUG FIX PE82-1404150: BUG FIX PE82-1312160: BUG FIX PE82-1312040: BUG FIX Patch PE82-1506230 ------------------ Platforms: All * A problem was fixed which could cause the database server to abort during database restructuring with an internal error (#4211). A message as below was logged: server panic: Fatal problem detected in cv_zoned Assertion failed: rc >= 0 server panic: Aborting on internal failure, file restruct_set.c This problem was caused by corrupted P or Z item values that could in some cases result in an unexpected conversion error. The database restructure process was changed to no longer fail due to corrupted item values. When a corrupted value is encountered the item is set to a default value (zero for numeric items). A message is written to the log for every item a conversion problem was encountered. WARNING: corrupted value during size conversion (item 'SET.ITEM') WARNING: precision loss during size conversion (item 'SET.ITEM') data set 'SET' has been restructured (### records) NOTE: ### conversion problem(s) encountered Patch PE82-1501300 ------------------ Platforms: All * A problem was fixed which could cause a slave server to not resume replication if the master server was shut down while on-line backup mode was active and the following on-line backup recovery was aborted (#4186). After the eloqdb is shut down while on-line backup mode is active, the eloqdb (or the dblogreset utility) performs a recovery from on-line backup mode. This may take considerable time, depending on the amount of data redirected to the log volume while on-line backup mode was active. Interrupting and then repeating this recovery could result in a wrong volume generation count, causing a slave server to stop replication. * Improved the interoperability of the dbrecover utility with database replication (#4201). After using the dbrecover utility on a replication master server, the resulting database environment can be used to synchronize a slave server, regardless whether dbrecover completely processed the last forward-log generation or a point-in-time recovery was performed where the last forward-log generation was processed only partially. If a master or slave server detects a previous point-in-time recovery, the volume generation count is incremented and a message like below is logged: L0: Note: dbrecover point-in-time recovery detected, volume generation set to ... Please note: It is not supported to use the dbrecover utility on a slave server to perform a point-in-time recovery, then later resume replication. Doing so would very likely result in slave server data corruption and/or would cause the slave server to crash. Notes / Related patches: * Patch PE82-1501301 or superseding (dblogreset utility) should be installed with this patch. Patch PE82-1411100 ------------------ Platforms: Windows * Fixed a potential event handle leak when a database session is closed (#4196). * Fixed misleading LogFile output on the config page of the HTTP status display and the dbctl logfile command if LogFile is set to syslog (#4197). Patch PE82-1410010 ------------------ Platforms: All * Fixed a potential race condition where under rare conditions dbopen could succeed although the database was already opened exclusively by another session purging the same database (#4188). As a consequence, the eloqdb server process could abort on a failed database consistency check because the database was accessed while being purged, for example: server panic: Fatal problem detected in Node_Delete Assertion failed: !node->ref_count server panic: Fatal problem detected in Pool_ReadAcc Assertion failed: Pool_TestFlag(Pool_BLOCKUSED, &header) server panic: Fatal problem detected in FixRec_GetLock Assertion failed: node * Fixed a potential race condition where under rare conditions accessing a database on a replicated slave server was not sufficiently locked against a concurrently replicated dbpurge or dbctl dbrestore (#4188). As a consequence, the eloqdb server process could abort on a failed database consistency check, for example: server panic: Fatal problem detected in FixRec_GetClusterAddress Assertion failed: meta->ulist_cache server panic: Fatal problem detected in Pool_ReadAcc Assertion failed: Pool_TestFlag(Pool_BLOCKUSED, &header) Patch PE82-1404150 ------------------ Platforms: All * Fixed a potential lock starvation issue with starting on-line backup (#4161). Under some conditions starting the on-line backup mode or switching the forward-log file could take an undefined time. * Shutting down the eloqdb server process could in some cases result in messages as below (#3623): epoll_ctl: write failed. [9] Bad file number This could happen if worker threads terminate after the internal event thread. The messages are harmless and have no further implications. * Fixed a potential race condition where a new forward-log generation could start with pending information from the previous segment (#4047). This could unexpectedly require that the previous segment is present when a recovery or replication is started. Patch PE82-1312160 ------------------ Platforms: HP-UX * Fix a potential performance regression on HP-UX introduced with "vnode" locking changes in patch PE82-1312040. Patch PE82-1312040 ------------------ Platforms: All * Fixed a lock starvation issue that could happen under a specific workload. This might cause eloqdb threads to be blocked for an undefined period waiting on the internal "vnode" lock. This should only affect large systems under high load. * Improved scalability of the internal "vnode" lock. The internal "vnode" lock could impact performance and CPU consumption under some workloads if the vnode lock is contended. * Fixed a B.08.10 interoperability problem that caused a status -700:-7 when opening a B.08.20 database using B.08.10. Installation: ------------- Please download the patch archive that corresponds with the installed release. The patch files follow the conventions below: PE82-1506230-hpux-ia64.tar.gz ^ ^ ^ | | Architecture / OS specific build | Operating system Patch ID HP-UX: In order to install this patch, you need to unpack it with gzip and tar. Gzip is included with HP-UX. Installation requires root privileges. cd /opt/eloquence/8.2 gzip -dc /path/to/PE82-1506230-hpux.tar.gz | tar xf - Files: bin/eloqdb32 (32 bit database server) bin/eloqdb64 (64 bit database server, not available on hpux-pa11) share/doc/PE82-1506230-README Linux: In order to install this patch, you need to unpack it with tar. Installation requires root privileges. cd /opt/eloquence/8.2 tar xzf /path/to/PE82-1506230-linux.tar.gz Files: bin/eloqdb32 (32 bit database server, only available on linux-i686) bin/eloqdb64 (64 bit database server, not available on linux-i686) share/doc/PE82-1506230-README Windows: Two options are available for patch installation. The patch is available as self extracting archive for automatic installation and as a zip archive for manual installation. Both patches are equivalent. Installation requires administrative capabilities. For automatic installation of this patch, please download the patch file PE82-1506230-win32.exe. Before installation, please consider stopping the database server, then execute the patch installation program. Installation does not require a reboot unless the patched files were active. For a manual installation of the patch, please download the patch file PE82-1506230-win32.zip and unpack its contents. Then perform the following steps: * Please make sure the eloqdb service is stopped before installing the patch (in the Service Control Manager or with net stop eloqdb). * Please copy the eloqdb32.exe file into the Eloquence bin directory. (Default location: C:\Program Files\Eloquence\8.2\bin) * Please copy the eloqdb64.exe file into the Eloquence bin64 directory. (Default location: C:\Program Files\Eloquence\8.2\bin64) * Please copy the PE82-1506230-README.txt file into the Eloquence share\doc directory. (Default location: C:\Program Files\Eloquence\8.2\share\doc) Files: eloqdb32.exe (32 bit database server) eloqdb64.exe (64 bit database server) PE82-1506230-README.txt