Row cannot be located for updating mysql server


27-Jun-2020 11:56

DELIMITER $$ CREATE TRIGGER user_bi BEFORE INSERT ON user FOR EACH ROW BEGIN INSERT INTO remote_user (username,password) VALUES (NEW.username, NEW.password); END $$ CREATE TRIGGER user_bu BEFORE UPDATE ON user FOR EACH ROW BEGIN UPDATE remote_user SET username = NEW.username, password = NEW.password WHERE username = OLD.username; END $$ CREATE TRIGGER user_bd BEFORE DELETE ON user FOR EACH ROW BEGIN DELETE FROM remote_user WHERE username = OLD.username; END $$ DELIMITER ; This is not a perfect solution and is not a high-availability solution, because it relies on solid connectivity between the two systems and even if you are using Inno DB and transactions, the actions you take against the target table are not part of your local transaction and cannot be rolled back.

I use the engine quite a bit; it comes in handy for a number of creative purposes in my environment, including one situation where I used a federated query launched by a trigger to impose foreign key constraints against a foreign data source; however, I restrict its use to back-end processes where unexpected issues such as timeouts, coding errors, or server-to-server network/outage/isolation events cannot result in the end user on one of our web sites experiencing any kind of problem.

That is, replicate all the commands received by Server B to Server A, configuring the latter as a slave of the former.

Connect to Server B and type the following sql command: ------------------ ---------- -------------- ------------------ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | ------------------ ---------- -------------- ------------------ | mysql-bin.000001 | 107 | example | test, informatio | ------------------ ---------- -------------- ------------------ 1 row in set (0.00 sec) STOP SLAVE; CHANGE MASTER TO MASTER_HOST = 'Server B IP Address', MASTER_USER = 'replicator', MASTER_PASSWORD = 'replicator_password', MASTER_LOG_FILE = 'mysql-bin.000001', MASTER_LOG_POS = 107; START SLAVE; Replace Server B IP Address with Server B numerical IPv4 address, replicator_password with the password you choose for your replicator user, mysql-bin.000001 and 107 with the File and Position column values retrieved above.

Please notice that this configuration will replicate/mirror each and every db with the sole exception of test and information_schema.

In order to do so, connect to Server A (via SQLyog, query browser or console) and type the following sql command: ------------------ ---------- -------------- ------------------ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | ------------------ ---------- -------------- ------------------ | mysql-bin.000001 | 107 | example | test, informatio | ------------------ ---------- -------------- ------------------ 1 row in set (0.00 sec) STOP SLAVE; CHANGE MASTER TO MASTER_HOST = 'Server A IP Address', MASTER_USER = 'replicator', MASTER_PASSWORD = '[replicator_password]', MASTER_LOG_FILE = 'mysql-bin.000001', MASTER_LOG_POS = 107; START SLAVE; Now you need to do the same thing from the other side.

we’ve used here: just delete each and every binlog-ignore-db and replicate-ignore-db replacing them with binlog-add-db and replicate-add-db instead, specifying only the database you need/want to mirror.

Once you did that, you can stop the servers and restart them.

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

row cannot be located for updating mysql server-1

carbon dating formula derivation

Visit Stack Exchange Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Sign up to join this community I am creating a trigger in My SQL and I need a little help.

My SQL should be installed on a dedicated server instead of installing it on a similar server with IIS running.