A MySQL replication slave is set up as follows: User all InnoDB tablesReceives ROW-based binary logs Has the read-only optionThe replication slave has been found in an error state.You check the MySQL error log file and find the following entries:2013-08-27 13:55:44 9056 [ERROR] Slave SQL: Could not execute Write_rows event on table test.tl; Duplicate entry ‘3’ for key’PRIMARY’ , Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event’s master log 56_master-bin.000003, end_log_pas 653, Error_code: 10622013-08-27 13:55:44 9056 [Warning] Salve: Duplicate entry ‘3’ for key ‘PRIMARY’Error_code: 10622013-08-27 13:55:44 9056 [ERROR] Error running query, slave SQL thread aborted. Fix theproblem, and restart the slave SQL thread with SLAVE START”, We stopped at log ‘56_masterbin.000003’ position 496 What are two possible causes for this error to occur?()
A.The slave was created with mysqldump –u root –p – skip-lock-table—all-databases > /data/data.sql
B.The slave user does have INSERT, UPDATE, or DELETE permission and cannot execute the write_rows function
C.For tables with UNIQUE keys, statement-based replication must be used maintain integrity
D.The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewrite
E.The applications have the SUPER privilege, which allows them to update rows
第1题:
第2题:
MySQL默认提供的用户是 。()
A.admin
B.test
C.root
D.user
第3题:
以下那一个选项是查询数据方法:
A.User.objects.filter(username='wangwu').get(pk=1)
B.User.objects.filter(id=user_id).update(password='9999')
C.User.objects.all().delete()
D.User.objects.get(pk=user_id).delete()
第4题:
1、设置MySQL字符集的方法
A.修改my.ini配置文件,可修改MySQL默认的字符集。###SXB###B.MySQL提供MySQL命令可以“临时地”修改MySQL“当前会话的”字符集以及字符序。###SXB###C.使用MySQL命令 “set names gbk;”可以“临时一次性地”设置character_set_client、character_set_connection以及character_set_results的字符集为gbk###SXB###D.连接MySQL服务器时指定字符集 mysql --default-character-set=字符集 -h 服务器IP地址 -u 账户名 –p密码第5题:
MySQL数据库支持以下哪些复制模式?
A.master-slave
B.master-master
C.master-master-slave
D.master-slave-slave
第6题:
1、Mysql 的存储引擎,myisam和innodb的区别。