RELOAD and LOCK TABLES (unless the --no-lock option is specified) in order to FLUSH TABLES WITH READ LOCK prior to start copying the files and REPLICATION CLIENT in order to obtain the binary log position, CREATE TABLESPACE in order to import tables (see Importing and Exporting Individual Tab...
this parameter applies to Disk Data I/O.You can obtain better performance by placing data files, undo log files,and the data node file system on separate physical disks.then you can set this parameter higher to enable separate threads to headle the files on each disk.if you use...
If you lock all of the tables with one statement, it will obtain locks individually as they become available, and block until all of the locks can be obtained... but if you lock one table at a time, make the changes, unlock the table, and then proceed to the next table, ...
If you read a table, especially a large table, during DR, the exclusive lock on that table may be blocked. For more information about the impact of DRS on databases, see How Does DRS Affect the Source and Destination Databases? Data-Level Comparison To obtain accurate comparison results, ...
I want to know Will “Mixed-mode inserts” obtain lock or a light-weight lock if I use “consecutive” or “interleaved” lock mode? Subject Written By Posted Will “Mixed-mode inserts” obtain lock if I use “consecutive” or “interleaved” lock mode?
It is recommended not to use a directory mounted through NFS because in some environments this can cause problems whereby the lock on the.pidfile remains in effect even after the process has terminated. To startndbd, it may also be necessary to specify the host name of the management server...
ndbdgenerates a set of log files which are placed in the directory specified byDataDirin theconfig.iniconfiguration file. It is recommended not to use a directory mounted through NFS because in some environments this can cause problems whereby the lock on the.pidfile remains in effect even afte...
Obtain the SQL statement for creating original tables, connect to DDM, log in to the corresponding schema, and execute the statement. Unsharded Unsharded Clear test data in the destination DDM instance to prevent conflicts with the data to be migrated. Prepare an RDS for MySQL instance. Export ...
If the source database is a self-managed MySQL database deployed in a dual-primary cluster, you must set the log_slave_updates parameter to ON. This ensures that DTS can obtain all binary logs. For more information, see Create an account for a self-managed MySQL ...
A client attempts to access a database but has no privileges for it.(没有权限) A client uses an incorrect password.(密码错误) A connection packet does not contain the right information.(连接没有包含正确信息) It takes more than connect_timeout seconds to obtain a connect ...