Problem with "GC overhead limit exceeded", "Java heapspace error"

[kaushik002]

Hello, I am using S1 TOPS ESD Coregistration tool with (S1A_IW_SLC__1SDV_20191016T121345_20191016T121412_029484_035ABB_373F) & (S1A_IW_SLC__1SDV_20191028T121345_20191028T121412_029659_0360C3_574E) InSAR data. I have 8GB RAM. I am trying it since 2 weeks but getting error like: “GC overhead limit exceeded”, “Java heapspace error”. Please give solution as early as possible.

[ABraun]

Please use the search function of this forum.

This was answered multiple times, 4 days ago the latest

Error in Java heap space

“Java heap space” indicates insufficient memory. The S1 TOPS Coregistration is a chain of multiple separate operators. RAM is often not sufficient to execute all steps in sequence, especially when you select many bursts in the Split operator. I recommend to execute the steps separately, especially reduce the number of bursts as much as possible and make sure that you only use VV polarization. Please have a look at this tutorial: DEM generation with Sentinel-1 - Workflow and challenges

[mengdahl]

We should direct people to the FAQ:s, which we should be upgrading in time for SNAP 8.0