Hello,
-> What is the version of your database?
-> Info: 512000 pages < 8KB pro page > => 4GB
128000 pages => 1GB
-> Adding the log volume will not solve the LOGFULL issue. You need to create the complete databackup, then log backup. As of 7.4 database version could be done in admin status.
If you are SAP customer =>
see SAP note : 869267 FAQ: SAP MaxDB log area
-> During the high loading to the database in parallel and slow i/o write at OS with small log area LOGFULL could occur. Use DB analyzer to find the bottleneck in the database & check that you use the fast disks for autosave logs. If you are SAP customer => create the SAP message.
-> For the issue with restart database please check the OS ulimits in the KnlMsg or knldiag.
If you are SAP customer => review SAP note 628131.
Be sure thar x_server restarted with recommended OS parameters settings, if you connected to the database remotely, the OS user < you restarted the database using dbmcli tool at DB server > has the recommended ulimits.
Regards, Natalia Khlopina