FETCH: Fetches columns from a table using a specific recordidentifier.
FETCH：使用指定的记录标识符从表中读取列。
2
The db2pd output above provides the recordidentifier (RID) of the rows that are locked.
上面的db 2 pd输出提供了被锁定的行的记录标识(rid)。
3
The lower three bytes, referred to as the recordidentifier (RID), contain the index of the row within the metadata table to which the token's MSB refers.