Hi everybody. As I am trying to work on big datasets, I thought that upgrading on the latest version of virtuoso would be a good idea as I would hopefully get some performance advantages too.
However, following the procedure described in http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/UpgradingToVOS610#Upgrading from Release 7.x to a newer Release 7.x I found out that my trx file has 185 bytes length and it would not go to 0 even after the restart with the "+checkpoint-only" argument. My log contains the following snippet after startup 10:57:16 It is impossible to have a database file /media/VirtuosoDBDrive/virtuoso.db with a length not multiple of 2MB. 10:57:16 The process must have last terminated while growing the file. 10:57:16 Please contact OpenLink Customer Support 10:57:16 Database version 3126 .... 10:58:00 Roll forward started 10:58:00 3 transactions, 185 bytes replayed (100 %) 10:58:00 Roll forward complete .... My questions are: 1. If I get it right, the virtuoso.trx size implies that there are transactions left uncompleted in a "dirty" state. However, this should not be the case since as the log shows normal replay of the transactions. Could I just delete the virtuoso.trx? Is there something else I could do to recover? 2. What would be the easiest way to upgrade the virtuoso server? I am not comfortable with the instruction "install the newer v7.x binary components, either atop or after removing the older v7.x binary components.". Is there a more specific guideline? Please note that I am running Virtuoso Version: 07.20.3214 Build: Oct 14 2015, on Ubuntu 14.04. Kind regards, Pantelis Natsiavas
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