https://userapps.support.sap.com/sap/support/knowledge/en/2433397
2433397 - Invalid OAM page (OAMINVALID_1) with stacktrace when killing spid - SAP ASE | SAP...
After a spid running 'update statistics' is killed ASE errorlog show 'Invalid OAM page' message for killed spid with a stacktrace : 00:0001:00000:00123:......