Record Internal Checkpoint in Sys_audit tableSummaryRecord Internal Checkpoint is a hexadecimal value that stores the date-time value along with milliseconds. It encodes two values, which are the Unix time since 1970 in milliseconds appended with a counter to distinguish if you have multiple audits made in the same millisecond. Ex : If the value is this field is "1747454a1480000001". This “0000001” string at the end of the checkpoint is shown for all "Record Internal Checkpoint" values. Separate it as “1747454a148” and “0000001”. Convert “1747454a148” to decimal which gives the result as “1599679537480”. When we convert the value using epochconverter.com, we can find that it was “Wednesday 9th September 2020, 19:25:37.480” (same as the sys_created_on value with the addition of millisecond resolution).