[QUOTE=niljoshi;9606]
Hi,
hi i want to modify one column in the table and i alos want to use --recursion-method/ --check-slave-lag i want to monitor the lag between two network how can i do this
These are my commands:-
pt-online-schema-change --p=123456 --execute --check-slave-lag=10s h=abc.slave , P=3306 --print --alter “MODIFY COLUMN abc varchar(7) NOT NULL DEFAULT ‘money’” D=archives,t=abc_details_xyz;
pt-online-schema-change --p=123456 --execute --recursion-method=dsn=D=percona,t=dsns --print --alter “MODIFY COLUMN abc varchar(7) NOT NULL DEFAULT ‘money’” D=archives,t=abc_details_xyz;
These two are my errors:–
DBD::mysql::db selectcol_arrayref failed: Unknown column ‘dsn’ in ‘field list’ [for Statement “SELECT dsn FROM archives.abc_details_xyz ORDER BY id”] at /usr/bin/pt-online-schema-change line 4764
Usage: pt-online-schema-change [OPTIONS] DSN
Errors in command-line arguments:
- Specify only one DSN on the command line
- The DSN must specify a database (D) and a table (t)
pt-online-schema-change alters a table’s structure without blocking reads or
writes. Specify the database and table in the DSN. Do not use this tool before
reading its documentation and checking your backups carefully. For more
details, please use the --help option, or try ‘perldoc
/usr/bin/pt-online-schema-change’ for complete documentation.
Please help on this topic you can contact me on badal.singh@cozygames.com