Virtuoso Error Message: Transaction aborted because its log after image size went above the limit

The Virtuoso Server writes a number of different logs, at a number of different levels, depending on various INI settings.

The "Transaction aborted because its log after image size went above the limit" error generally indicates that the roll-forward log entry of a transaction has exceeded the size set by TransactionAfterImageLimit, which defaults to 50Mb.

To resolve this problem, you can try increasing this setting -- but note that transaction roll-back data takes about twice as much space as roll-forward data. Hence, when a transaction's roll-forward data is 50Mb, the total transient consumption is closer to 150 Mb.

If you've encountered this error while loading RDF data, consider using the Bulk Loading scripts which were built to prevent such issues.