MongoDB -Calculating Collection Size

Calculating Collection Size

We can get the size of a collections by using the shell’s functions

  • db.collection.dataSize() : Returns data size in bytes for the collection.
  • db.collection.storageSize() : Returns allocation size in bytes, including unused space.
  • db.collection.totalSize() : Returns the data size plus the index size in bytes.


Calculating Size of All Collections


>cols = db.getCollectionNames();

// Iterate through each collection.

> cols.forEach(function(col) {

print (col +’-‘+ db[col].totalSize());





About Prashanth Jayaram

DB Technologist, Author, Blogger, Service Delivery Manager at CTS, Automation Expert, Technet WIKI Ninja, MVB and Powershell Geek My Profile: jayaram/ Connect Me: Twitter @prashantjayaram GMAIL The articles are published in:
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