Troubleshooting
Problem
the following error is returned while executing R code within Watson Studio Local R Studio connecting to Impala/Oracle via JDBC connection
Error observed :
java.lang.OutOfMemoryError: Java heap space
GC overhead limit exceeded
GC overhead limit exceeded
Symptom
Error observed :
: java.lang.OutOfMemoryError: Java heap space
GC overhead limit exceeded
GC overhead limit exceeded
Cause
java.lang.OutOfMemoryError on fetch means that the result set is bigger than the default heap size for rJava: 512MB. It is relatively easy to exceed this maximum size
Environment
Watson Studio Local 1.2.3, RStudio with R 3.4.3
Resolving The Problem
To increase java heap size use the following:
options(java.parameters = "-Xmx4g") where 4g is the size you want to set, it might be different depending on specific needs and availability.
Note: that this step must be performed prior to loading any packages, will be the first line in the code snippet. To have java heap memory change take an effect, the RStudio session should be restarted
Document Location
Worldwide
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSHGWL","label":"IBM Watson Studio Local"},"Component":"R Studio","Platform":[{"code":"PF043","label":"Red Hat"}],"Version":"1.2.3","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
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Document Information
More support for:
IBM Watson Studio Local
Software version:
1.2.3
Operating system(s):
Red Hat
Document number:
1072898
Modified date:
30 December 2019
UID
ibm11072898