https://community.sap.com/t5/technology-q-a/assertion-failed-201819/qaa-p/13826257#M4857100 <P>Assertion 201818 indicates a corruption problem with the checkpoint log, which is why you cannot start the database - the checkpoint log bitmap is found to be corrupt before the forward transaction log can be processed. </P> <P>If you don't have a (valid) backup that you can restore, you should contact Sybase technical support for assistance with salvaging the data from the database.</P> Fri, 27 Apr 2012 16:44:28 GMT Former Member 2012-04-27T16:44:28Z https://community.sap.com/t5/technology-q-a/assertion-failed-201819/qaq-p/13826256 <P>When I try to start the database service or connect to the write file (using dbeng9) I get the following error:</P> <P>Error Connection Failed:database error <STRONG><EM> ERROR </EM></STRONG> Assertion failed: 201818 (9.0.2.2451) Checkpoint Log: invalid bitmap page -- transacction rolled back</P> <P>No log file exists. I had tried to valid or rebuild the database file but the error stops that.</P> <P>Some tools or procedures for recovering data ?</P> <P>Thanks for your help</P> <P>Moises Huallpamaita M. Cusco PERU</P> Fri, 27 Apr 2012 13:23:36 GMT https://community.sap.com/t5/technology-q-a/assertion-failed-201819/qaq-p/13826256 Former Member 2012-04-27T13:23:36Z https://community.sap.com/t5/technology-q-a/assertion-failed-201819/qaa-p/13826257#M4857100 <P>Assertion 201818 indicates a corruption problem with the checkpoint log, which is why you cannot start the database - the checkpoint log bitmap is found to be corrupt before the forward transaction log can be processed. </P> <P>If you don't have a (valid) backup that you can restore, you should contact Sybase technical support for assistance with salvaging the data from the database.</P> Fri, 27 Apr 2012 16:44:28 GMT https://community.sap.com/t5/technology-q-a/assertion-failed-201819/qaa-p/13826257#M4857100 Former Member 2012-04-27T16:44:28Z