Question: what is ccsid in db2?
Answer: DB2 for z/OS uses CCSID values, not code page numbers. To indicate the encoding value of some data, specify the CCSID. DB2 uses this CCSID value to interpret the data. If you do not specify the correct CCSID, the data can be misinterpreted or corrupted by the receiving program. Each CCSID belongs to an encoding scheme.