1. Read up on raw tables (beware of restrictions!)
https://www.ibm.com/support/knowledgecenter/SSGU8G_12.1.0/com.ibm.admin.doc/ids_admin_0514.htm2. Consider "smaller transactions" of inserts ... and can also use this to provide an estimate of usage (i.e. do a small subset and check log ID and log POS before and after from onstat -l)(Always provide O/S and Informix Version ... helps people responding).