Hi, Hugh. Thank you for your response.
Yesterday evening another virtuoso crashed during the backup set by virtuoso inner scheduler with the same error: .... 20:13:12 Backing up page 2930000 20:13:12 page set checksum ck=d368ab6a pck=5368ab6a xor = 80000000 20:13:12 /usr/bin/virtuoso-t() [0xb07467] .... 20:13:12 /usr/bin/virtuoso-t() [0xb15a4c] 20:13:12 /lib/x86_64-linux-gnu/libpthread.so.0(+0x8182) [0x7ff19d613182] 20:13:12 /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7ff19cc1d47d] 20:13:12 GPF: disk.c:298 page set checksum error Today I run the integrity check as you suggested and it also stopped with the following error: .... 07:57:36 Backup to /dev/null started 07:57:36 Dumping the schema tables 07:57:36 Dumping the registry 07:57:36 Dumping the schema done 08:05:05 /usr/bin/virtuoso-t() [0xb07467] .... 08:05:05 /usr/bin/virtuoso-t() [0xb15a4c] 08:05:05 /lib/x86_64-linux-gnu/libpthread.so.0(+0x8182) [0x7fb0752c9182] 08:05:05 /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fb0748d347d] 08:05:05 GPF: page.c:899 out of order Suggesting that our virtuoso is corrupt, but making a crash dump is not an option for us due to the error in the database after restoring with date fields, that I have reported already. The previous virtuoso-users mail list thread: https://www.mail-archive.com/search?l=virtuoso-users@lists.sourceforge.net&q=subject:%22Re%5C%3A+%5C%5BVirtuoso%5C-users%5C%5D+SQL+Error+on+insert+with+virtuoso+7.2.1%22&o=newest. AS I remember I sent a test scenario how I could reproduce it to Patrick, but have not gotten any feedback on the matter yet. The version of virtuoso: # virtuoso-t -? Virtuoso Open Source Edition (Column Store) (multi threaded) Version 7.2.3-dev.3215-pthreads as of Jan 20 2016 Compiled for Linux (x86_64-pc-linux-gnu) Copyright (C) 1998-2015 OpenLink Software What can cause the "page.c:899 out of order" corruption, to know how to avoid it? We have been using virtuoso for some time without any problems. Best regards. Piret ------------------------------------------------------------------------------ _______________________________________________ Virtuoso-users mailing list Virtuoso-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtuoso-users