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Mysqldump command linux stack overflow

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I found this command to be concise and effective:. So I've tried adding --skip-lock-table to mysqldump and raising open-files-limitbut no luck, same error.

Obvious solution is to do dump and then import as it works finebut piping seems better and more clean to me let me know if I'm wrongplus I'm curious to find out what causes this problem. Did I hit some limit that affects command piping? I've been doing this on hosting server, running MySQL 5. Latter gives a bit different error:.

Even though I feel it's not really answer to my question, ssmusoke's suggestions were most to the point resulting in accepted answer. The problem may be that the load on the servers gets too high doing both dumping and loading at the same time.

This also means that you lose some optimizations like extended inserts, ability to disable foreign keys which can be achieved when you dump a file then import it. I would recommend that you use mysqldump to generate the backup then load it using mysql.

That way the load on your server is reduced, and like you said it always works. You can even automate it into a bash script to do both so that you do not need to execute the mysqldump and loading commands.

The default is 1M. It may take trial and error to get the right value. Do you need to redirect the stderr stream as well as the stdout from the mysqldump? Error messages may be getting interleaved with the dump output. The problem is that you are redirecting stderr to stdout, thus any errors are being interpreted as SQL. Then the real error will show up. Learn more. Piping mysqldump to mysql Ask Question.

Asked 8 years, 7 months ago. Active 3 years, 7 months ago. Viewed 21k times. Second idea comes from the impression that error message might be truncated, and that it says " Active Oldest Votes. Stephen Senkomago Musoke Stephen Senkomago Musoke 3, 2 2 gold badges 24 24 silver badges 23 23 bronze badges. I doubt the load is that high that connection drops. Even if it is, I would be weird that it always fails at the same place same tableright?

Anyway, this process was scripted, but when it started to fail I had to take it out and start analyzing 'by hand', and now it's I hope temporarily working through file. Nevertheless, I'd like to know what's the reason it fails this way. Thanks for suggestions. Try mysqldump --opt db1 mysql db2.

32- Advanced Exploitation - Buffer Overflow - (Shellcode)

John Retterer John Retterer 21 1 1 bronze badge. I really don't, but that's the leftover, was testing without it, sorry for misguiding you, I'll edit the question.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am using mysqldump to take backup of my database, but the command is not working. If the mysqldump can not be identified by your CMD prompt I believe you are using Windowsthen you first have to go to the bin folder where this command can be found. Now you should run your mysqldump command for taking the backup as you have been trying.

Hope this helps! Learn more.

mysqldump command linux stack overflow

Ask Question. Asked 10 years, 4 months ago. Active 1 year, 10 months ago. Viewed 30k times. Harish Kurup Harish Kurup 6, 16 16 gold badges 56 56 silver badges 92 92 bronze badges. Active Oldest Votes. Bakkal but then also not working, giving the error "mysqldump is not recognized Thanks a lot.

Thanks, it solved my problem. Ayush Jain Ayush Jain 51 3 3 bronze badges. If mysqldump is not identified by the cmd prompt that means it cannot recognize where the mysqldump. You need to add path of the directory where the exe is located in the PATH variable under environment variables. After doing that your command will start working in the cmd prompt. However, this is not part of the best practices.

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It only takes a minute to sign up. However when I opened the generated. I think you expect to see a lot of inserts and probably you see only 1 or 2. Is normal, if you look closer you will see 1 or 2 BIG inserts extended inserts. Sign up to join this community. The best answers are voted up and rise to the top. Asked 9 years, 6 months ago. Active 9 years, 5 months ago. Viewed 4k times. I am running mysqldump on Ubuntu Linux Does anyone know what maybe going on?

It should be mysqldump -u username Active Oldest Votes. Sacx Sacx 2, 13 13 silver badges 13 13 bronze badges. Out of curiosity, how many rows do most extended inserts contain? I think mysqldump calculate that depending on how many data is in tables. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Ben answers his first question on Stack Overflow. The Overflow Bugs vs.

Featured on Meta. Responding to the Lavender Letter and commitments moving forward.

Linux mysqldump command

Related 0. Hot Network Questions.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I am mewbie for ssh and mysql commanding. I have a issue with taking backup from one linux server to another linux server using passwordless authentication.

I already generated the key for passwordless authentication and upload it to another server. Learn more. Asked 7 years ago. Active 6 years, 10 months ago. Viewed times. Minor code may provide more information debug1: Unspecified GSS failure.

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If anyone have query about this frequenkly ask me. Ghost Answer. Ghost Answer Ghost Answer 1, 1 1 gold badge 16 16 silver badges 38 38 bronze badges. Can you check the server side logs? I did not check any server side logs.

Maybe can you paste the exact command line, and the contents of the scripts? Active Oldest Votes. Are you able to ssh to that server2 from server1 Just use this command "ssh server2".

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I aask you if nice is applied only to mysqldumnp or is applied to gziptoo? No, nice as opposed to the! The change of niceness is only applied to the process that nice is executed in that will later execute the command passed as arguments and all the processes that that command may itself spawn as niceness is inherited upon fork. If you want to increase the niceness of both commands, you'd need two separate calls to nice :. Or you could increase the niceness of the current shell or subshell process with renice prior to starting the pipeline beware some renice implementations set the niceness while others increase it by the specified amount.

mysqldump command linux stack overflow

In zshcommands started asynchronously have their niceness increased by 5 unless the bgnice option is disabledso you could also do:. Also beware that in nice mysqldump They apply to the following pipeline. Beware though that if there's a -p word following time or if time is quoted in any way, then the time standalone command is run instead and therefore only applies to the command passed as its arguments.

Sign up to join this community. The best answers are voted up and rise to the top. Ask Question. Asked 1 month ago. Active 1 month ago. Viewed times. It shouldn't. Active Oldest Votes. If you want to increase the niceness of both commands, you'd need two separate calls to nice : nice cmd1 nice cmd2 Or have nice start a shell that starts the pipeline: nice sh -c 'cmd1 cmd2' Or you could increase the niceness of the current shell or subshell process with renice prior to starting the pipeline beware some renice implementations set the niceness while others increase it by the specified amount.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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I'm using non-install version of mysql5. It doesn't even ask to enter the password. Not sure if there are some security issues! Run the command prompt as administrator and attempt to run the mysqldump again. Sign up to join this community. The best answers are voted up and rise to the top. How to run mysqldump from windows command prompt Ask Question. Asked 4 years, 11 months ago. Active 4 years, 10 months ago. Viewed 6k times. How can I use mysqldump from windows command prompt? Sona7 Sona7 5 1 1 silver badge 2 2 bronze badges.

Active Oldest Votes. I just created the folder and it worked! Yes it was a typo ; Thank you! Well that appears the correct way as far as you're using right path to binary mysqldump! Can you confirm if you can login and it behaves well? Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Ben answers his first question on Stack Overflow. The Overflow Bugs vs. Featured on Meta. Responding to the Lavender Letter and commitments moving forward. Related 0. Hot Network Questions.The mysqldump client is a utility that performs logical backupsproducing a set of SQL statements that can be run to reproduce the original schema objects, table data, or both. Certain options might require other privileges as noted in the option descriptions.

mysqldump command linux stack overflow

To reload a dump file, you must have the same privileges needed to create each of the dumped objects by issuing CREATE statements manually. These may be used when dumping stored programs to preserve their character encodings. To reload a dump file containing such statements, the ALTER privilege for the affected database is required.

You can clone databases for development and DBA work, or produce slight variations of an existing database for testing. It is not intended as a fast or scalable solution for backing up substantial amounts of data.

For large-scale backup and restore, a physical backup is more appropriate, to copy the data files in their original format that can be restored quickly:. Buffering in memory can be a problem if you are dumping large tables. To dump tables row by row, use the --quick option or --optwhich enables --quick.

The --opt option and hence --quick is enabled by default, so to enable memory buffering, use --skip-quick. If you are using a recent version of mysqldump to generate a dump to be reloaded into a very old MySQL server, use the --skip-opt option instead of the --opt or --extended-insert option.

There are three general ways to use mysqldump. It can be used to dump a set of one or more tables, to dump a set of one or more complete databases, or to dump an entire MySQL server. These three uses, respectively, are shown here:. Usage scenarios for mysqldump include setting up an entire new MySQL instance including database tablesand replacing data inside an existing instance with existing databases and tables.

The following options let you specify which things to tear down and set up when restoring a dump, by encoding various DDL statements in the dump file. The following options print debugging information, encode debugging information in the dump file, or let the dump operation proceed regardless of potential problems.

One use for this option is to cause mysqldump to continue executing even when it encounters a view that has become invalid because the definition refers to a table that was dropped. Without --forcemysqldump exits with an error message.

With --forcemysqldump prints the error message, but it also writes an SQL comment containing the view definition to the dump output and continues executing. Verbose mode. Print more information about what the program does. The following options change how the mysqldump command represents character data with national language settings. If no character set is specified, mysqldump uses utf8and earlier versions use latin1.

This option is enabled by default. The mysqldump command is frequently used to create an empty instance, or an instance including data, on a slave server in a replication configuration. The following options apply to dumping and restoring data on replication master and slave servers.

This option automatically enables --master-data. This option is similar to --master-data except that it is used to dump a replication slave server to produce a dump file that can be used to set up another server as a slave that has the same master as the dumped server. These are the master server coordinates from which the slave should start replicating.

Also, specifying this option causes the --master-data option to be overridden, if used, and effectively ignored. The option value is handled the same way as for --master-data setting no value or 1 causes a CHANGE MASTER TO statement to be written to the dump, setting 2 causes the statement to be written but encased in SQL comments and has the same effect as --master-data in terms of enabling or disabling other options and in how locking is handled.


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Yora Posted on 10:12 pm - Oct 2, 2012

Es ist der Fehler geschehen