标题: ORA-01754: a table may contain only one column of type LONG [打印本页] 作者: admin 时间: 2016-7-18 15:16 标题: ORA-01754: a table may contain only one column of type LONG ORA-01754: a table may contain only one column of type LONG Cause: An attempt was made to add a LONG column to a table which already
had a LONG column. Note that even if the LONG column currently in the table
has already been marked unused, another LONG column may not be added until
the unused columns are dropped. Action: Remove the LONG column currently in the table by using the ALTER
TABLE command.