The database is read only; SQL statement:

java.sql.SQLException: java.sql.SQLException: The database is read only; SQL statement:
INSERT INTO TXC_UNDO_LOG (UNIT_ID,GROUP_ID,SQL_TYPE,ROLLBACK_INFO,CREATE_TIME) VALUES(?,?,?,?,?) [90097-197] Query: INSERT INTO TXC_UNDO_LOG (UNIT_ID,GROUP_ID,SQL_TYPE,ROLLBACK_INFO,CREATE_TIME) VALUES(?,?,?,?,?) Parameters: [ac006b42457ed1e82c93555e6f237d3c, 554a159c96c537, 3, [11, 10, 8, 116, 98, 95, 116, 111, 107, 101, 110, 19, 11, 10, 8, 116,
在客户端为什么总会更新这种表，这张表TXC_UNDO_LOG 是干什么用的？用着用着就会出现这个问题