XML Split of a Large file

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I have a 15 GB XML file which I would want to split it .It has approximately 300 Million lines in it . It doesn't have any top nodes which are interdependent .Is there any tool available which readily does this for me ?

I think you'll have to split manually unless you are interested in doing it programmatically. Here's a sample that does that, though it doesn't mention the max size of handled XML files. When doing it manually, the first problem that arises is how to open the file itself.

I would recommend a very simple text editor - something like Vim. When handling such large files, it is always useful to turn off all forms of syntax highlighting and/or folding.

Other options worth considering:

  1. EditPadPro - I've never tried it with anything this size, but if it's anything like other JGSoft products, it should work like a breeze. Remember to turn off syntax highlighting.

  2. VEdit - I've used this with files of 1GB in size, works as if it were nothing at all.

  3. EmEditor

How to Split Large XML Files for WordPress [Quicktip], Splitting Complex and Irregular XML. Files tab: select the XML file, output folder and output file name for the split files. Methods tab: select method 1, set the frequency to 1000, depth to 2 and element name to "ORDER". Options tab: check the Preserve Structure option then click the Show button next to it. Split Large Files “XMLSplit” is a unique software to split large XML files into smaller ones. Learn how to split large files in to smaller ones. Sometimes your document becomes too large and cannot be manipulated by sending through attachment as mail.

XmlSplit Splits Large XML Files Into Smaller XML Files, I am referring to files of size 25MB and more. An approach for processing such large XML files may be to split the XML document into smaller  Split That XML or OOXP Splitter is an opensource portable tool developed for only one purpose – splitting large XML files while keeping child-parent relationship, cardinality and XML validation intact. It is a single executable file which can be run from USB drive as well.

QXMLEdit has a dedicated function for that: I used it successfully with a Wikipedia dump. The ~2.7Gio file became a bunch of ~1 400 000 files (one per page). It even allows you to dispatch them in subfolders.

Split large XML files into small files, In this tutorial, we will show you how, using two different methods. Splitting XML files on Windows. If you are on Windows, you can use WXR File  Fast, Flexible XML Splitter Includes: Files tab: select the XML file, output folder and output file name for the split files. Methods tab: select method 1, set the frequency to 1000, depth to 2 and element name to "ORDER". Options tab: check the Preserve Structure option then click the Show button

Here is a low memory footprint script to do it in the free firstobject XML editor (foxe) using CMarkup file mode. I am not sure what you mean by no interdependent top nodes, or tag checking, but assuming under the root element you have millions of top level elements containing object properties or rows that each need to be kept together as a unit, and you wanted say 1 million per output file, you could do this:

split_xml_15GB()
{
  int nObjectCount = 0, nFileCount = 0;
  CMarkup xmlInput, xmlOutput;
  xmlInput.Open( "15GB.xml", MDF_READFILE );
  xmlInput.FindElem(); // root
  str sRootTag = xmlInput.GetTagName();
  xmlInput.IntoElem();
  while ( xmlInput.FindElem() )
  {
    if ( nObjectCount == 0 )
    {
      ++nFileCount;
      xmlOutput.Open( "piece" + nFileCount + ".xml", MDF_WRITEFILE );
      xmlOutput.AddElem( sRootTag );
      xmlOutput.IntoElem();
    }
    xmlOutput.AddSubDoc( xmlInput.GetSubDoc() );
    ++nObjectCount;
    if ( nObjectCount == 1000000 )
    {
      xmlOutput.Close();
      nObjectCount = 0;
    }
  }
  if ( nObjectCount )
    xmlOutput.Close();
  xmlInput.Close();
  return nFileCount;
}

I posted a youtube video and article about this here:

http://www.firstobject.com/xml-splitter-script-video.htm

Splitting Large XML Files in Java, Our best option is to create some pre-processing tool that will first split the big file in multiple smaller chunks before they are processed by the  xml_split - cut a big XML file into smaller chunks DESCRIPTION "xml_split" takes a (presumably big) XML file and split it in several smaller files. The memory used is the memory needed for the biggest chunk (ie memory is reused for each new chunk).

The open source library comma has several tools to find data in very large XMl files and to split those files into smaller files.

https://github.com/acfr/comma/wiki/XML-Utilities

The tools were built using the expat SAX parser so that they did not fill memory with a DOM tree like xmlstarlet and saxon.

How to Split Large XML Files Before Uploading to Your WordPress , In such a situation, you need to split the XML file into small files and upload them one by one. This tutorial is going to provide you with the easiest  As mentioned already the xml_split from the Perl package XML::Twig does a great job. Usage xml_split < bigFile.xml #or if compressed e.g. bzcat bigFile.xml.bz2 | xml_split Without any arguments xml_split creates a file per top-level child node.

xml_split: cut a big XML file into smaller chunks, "xml_split" takes a (presumably big) XML file and split it in several smaller files. The memory used is the memory needed for the biggest chunk. Typically, when we talk about "large" XML files, it sizes at about 100MB or above. Your approach loads the whole file into the memory, that will put great payload to the system. If the file goes about 400MB, it won't work on 32bit machines at all.

Best way to split single large xml file into multiple xml files with java , For eg: my large xml file will look this. <Document xmlns="urn:iso:std:iso:20022:​tech:xsd:pain.001.001.05"> <  Here is how we split the file and how it works: Run the EXE as in Fig. 1. Select a file to split (a large XML file).

[SOLVED] Splitting XML Files, Solution: You could potentially use PowerShell to split the files. But I am not sure how it work performance wise for files that are so large, however since the. Split a large XML file into smaller XML files by a given element name - Main.java

Comments
  • Does the sample in the link provided do tag checking ?
  • If you're asking about the CodeProject link, I think it inserts Root nodes at the beginning and end of each split file.
  • Unfortunately it has crashed after 750 MB
  • I can vouch for EmEditor's efficiency at editing huge files. Good editor, deserves to be better known; shame the free version was dropped.
  • Thanks, @bobince. I haven't had an opportunity to use it myself but have heard about its effectiveness.
  • Error # 16 saying the maximum file size limit exceeded for 1GB file. What is the maximum size it can split?
  • I don't know why you were downvoted, this is a very useful, open source tool.
  • these fail for me on much smaller files (~1GB).
  • xmlstarlet and saxon failed for us too so that's why I added the xml tools to comma.
  • I've added a solution onto the linked item stackoverflow.com/questions/4325823/…
  • Here's the instructions on how to use UE to split a large file ultraedit.com/support/tutorials_power_tips/ultraedit/…