NetBeans background scanning projects takes too long

Question

NetBeans background scanning projects takes too long. Every time when I open netbeans it scanning for ages. I used NetBeans 7.2 and it works perfecly. Now I formatted pc and rei

Answer 1

On Windows 10 64bit I had the same problem with Netbeans IDE 8.1 I restarted Netbeans as administrator and the problem was solved. Then I closed Netbeans and started normally and the problem was still gone.

Product Version: NetBeans IDE 8.1 (Build 201510222201)
Updates: NetBeans IDE is updated to version NetBeans 8.1 Patch 1
Java: 1.8.0_60; Java HotSpot(TM) 64-Bit Server VM 25.60-b23
Runtime: Java(TM) SE Runtime Environment 1.8.0_60-b27
System: Windows 10 version 10.0 running on amd64; Cp1252; nl_NL (nb)

Answer 2

OS: Windows 7 x64.

The following worked for me:

I fully uninstalled Netbeans (ticked all boxes in uninstaller). For those who couldn't you'll need to go to C:\Users\%username%\AppData\Roaming\NetBeans\8.0.2 and delete a file called 'lock'. This is normally removed when the program exits but if you need to force terminate it'll remain there.

After that I uninstalled JDK and JRE then downloaded Java Platform (JDK) 8u40: http://www.oracle.com/technetwork/java/javase/downloads/index.html

And Netbeans 8.0.2: https://netbeans.org/downloads/

Installed JDK (which installs JRE too), after that Netbeans. Once complete I loaded up projects where background scanning got stuck and it seems to have fixed it. Will post updates if it starts happening again.

Answer 3

i'm facing the same issue, but it works fine after increase the heap size by adding -J-Xmx2048m in <NETBEANS_DIR>\etc\netbeans.conf

mine looks like this:

 netbeans_default_options="-J-client -J-Xss2m -J-Xms2048m -J-Xmx2048m -J-XX:PermSize=32m ......

Answer 4

Please try NetBeans 8.0.2 from https://netbeans.org/downloads/

NetBeans 7.2 is too old and you will not get any support anymore.

Answer 5

I had the same problem but in my case I was on Windows 10 and running NetBeans 8.1.

Before I formatted my laptop I copied and backed up C:\Users\user_name\AppData\Roaming\NetBeans\8.1 and C:\Users\user_name\AppData\Local\NetBeans\Cache folders

Then i followed the below steps:

1. Install NetBeans and run it.
2. Closed NetBeans
3. Go to C:\Users\user_name\AppData\Roaming\NetBeans\8.1 and C:\Users\user_name\AppData\Local\NetBeans\Cache folders and replace them with the backed up folders.
4. Run NetBeans again

I hope this solves your problem!!

Answer 6

Always I fix such Netbeans related problems by deleting cache directory.

Directory location can be seen on About dialog window. For me, the path is

C:\Users\USER\AppData\Local\NetBeans\Cache\YOUR_VERSION