I started a dump of mydatabse its over 5gb and now it is giving out a error after downloading 2gb the error is mentioned below.
I am confused have not tried anything.
mysqldump -uroot -proot -h123.123.123.123 example >example.sql
mysqldump: Error 2013: Lost connection to MySQL server when dumping table `a_dit` at row: 444444
And I don't want to start all again.
It stopped at a table, is there anyway to resume from the left table or to check and resume the dumping process?
yes you can
mysqldump -uroot -p db_name --skip-create-options table_name --where='id>666666'
or you can also use
SELECT * INTO OUTFILE 'data_path.sql' from table where id>666666
I would recommend to start again and dump every table on its own.
Related
We have a cron that does a full dump of the MySQL5 server, and in tests of restore on a empty instance, it restores all bases, including mysql with mysql.user carrying users and permissions together.
In MySQL8 because mysql base is system, the --add-drop-database and --all-databases attributes conflict giving an error in the restore "ERROR 3552 (HY000) at line 19044: Access to system schema 'mysql' is rejected.", as it is not allowed to drop the mysql base.
Has anyone managed to get around this situation and bring users and privileges together in MySQL8 in same dumpfile?
This is the command i run to dump:
mysqldump --add-drop-database --flush-logs --single-transaction --ignore-table=mysql.innodb_index_stats --ignore-table=mysql.innodb_table_stats --quick --all-databases --triggers --routines --events -u root --password='senha' -P 3306 -h 1.1.1.1 | bzip2 > /tmp/backup.sql.bz2
The problematic SQL:
/*!40000 DROP DATABASE IF EXISTS `mysql`*/;
The best way to walk around this, just open the dump SQL file, delete this SQL,
if the file is too big, use sed.
I ran into this same scenario. I dumped a broken instance with all databases and using add-drop-statement to try and save the data, but when I went to restore it I was blocked. You can no longer drop the mysql system database.
My database backup was something like 150gb, and opening it manually was not an option (a shame as i could tell by doing head -n 50 backup.sql that the problematic statement was within the first few lines).
the statement to remove was
/*!40000 DROP DATABASE IF EXISTS `mysql`*/;
and the sed command for me was:
sed -i 's/\/\*!40000 DROP DATABASE IF EXISTS `mysql`\*\/;/ /g' backup.sql
I would paste the statement into an empty text file first, and run the command to confirm that it actually works. This way you don't waste a ton of time on the execution of a very large backup file -- as there's a chance with your version of sed, or OS, that it might resolve the regular expression differently.
ERROR 3554 (HY000) at line 318: Access to system table 'mysql.innodb_index_stats' is rejected.
Operation failed with exitcode 1
11:27:20 Import of C:\Users\VELOXSHOP\Downloads\dumpfilename.sql has finished with 1 errors
How do I allow acess to that table?
You'll need to make a new dump/backup of your old database, this time remove those innodb tables from your target. You can do this by using --ignore-table parameter on the command line:
mysqldump -u root -p --all-databases --ignore-table=mysql.innodb_index_stats --ignore-table=mysql.innodb_table_stats > dump.sql
Then you should be able to restore your backup on the new database using the command below:
mysql -u root -p < dump.sql
You can also circumvent this error using the --force option which causes mysql client to continue despite errors.
Try to add -f to your command like so:
mysql -u root -p -f < dump.sql
-f means --force.
This did the trick for me!
It seems to be restricted in Mysql 8. Remove the insert statement from the sql file. You may have to use sed if the file is very large
https://stackoverflow.com/a/26379517/1106420
https://bugs.mysql.com/bug.php?id=92675
That is a MySQL system table and it's unlikely that you should be inserting records into it directly. MySQL should update the table when it calculates new statistics for indexes when thresholds pass.
Inspect line 318 and figure out why it's trying to insert into that table.
I currently using mysqldump command as follows
mysqldump -u username -p -h hostName database tableName > dump.sql
and it fails with emitting the following error
mysqldump: Error 2013: Lost connection to MySQL server during query when dumping table `table_name` at row: 1652788
Is there any other way (perhaps a parameter to mysqldump or etc) for exporting large MySQL tables?
You can add a parameter --single-transaction to the mysql dump command if you are using innodb engine. This will eliminate locks on the table and possible connection timeouts.
Also, ensure that you have given sufficient values for max packet size, and innodb lock wait timeout
I need some help, why is it that after importing an mysqldump (table) at first you can see result, but when you exit
mysql -uroot -proot
and select again the table then check, it returns empty.
first connect mysql by below command-
mysql -uroot -proot
Note: assuming root is password of root user.
Now connect to database in which you imported table-
use my_db;
Now check your table by-
show tables;
or
show tables like 'my_table'
If still getting error then show how you import data and show first few lines of your backup if possible.
Or start mysql command shell using:
>mysql -u youruser -p yourdatabase
and then check up your table.
mysql>select * from yourtable;
P.S If you didn't choose any database you get appropriate error 1046:
No database selected.
If you don't get such error message and see you table empty YOU CHOSE WRONG DATABASE.
I'm trying to dump 13GB database , while doing that I'm encountering following error.
Here is the dump statment
mysqldump -u user_db -p resolve_production > resolve_production.sql
mysqldump: Error 1053: Server shutdown in progress when dumping table audits at row: 10506716
It is possible that the Server was shutdown or restated when the backup start, and your backup is not complete, i recommend you to dump your file again. the Backup can be corrupted or incomplete.