TIMESTAMP data type takes 10 bytes and default is YYYY-MM-DD: HH: MM:SS-NNNNNN.
In IBM Db2, the physical storage length of the TIMESTAMP data type is 10 bytes. TIMESTAMP data type represents a date and time value, and its storage includes both the date and time components. The format is YYYY-MM-DD-HH.MM.SS, and the storage is allocated accordingly.