R RJDBC java.lang.OutOfMemoryError

Question

I got following error while run dbGetQuery of RJDBC 0.2-4:

Error in .jcall(rp, "I", "fetch", stride) :    
  java.lang.OutOfMemoryError: Java heap space

Following is my code:

Sys.setenv(JAVA_HOME='C:/Program Files (x86)/Java/jdk1.7.0_25')
options(java.parameters='-Xmx1g')
library(rJava)
library(rjson)
library(RJDBC)

# Output Java version
.jinit()
print(.jcall("java/lang/System", "S", "getProperty", "java.version"))

jdbcDriver <<- JDBC(driverClass="oracle.jdbc.OracleDriver", classPath="C:/lib/dashboard_lib/ojdbc6.jar")
jdbcConnection <<- dbConnect(jdbcDriver, "...", "...", "...")
dataset <<- dbGetQuery(jdbcConnection, "select * from OPR_DATA.MV_REG_CTRY_MS_QUARTER_AMT")

Can anyone help me with this, thanks very much in advance

Have you tired to make increase the memory to 4g instead of 1g. I mean set options for the java parameters to be `-Xmx4g` instead of `-Xmx1g` — mallet, Oct 29 '14 at 17:35

score 21 · Answer 1 · answered Jun 28 '16 at 12:49

21

Simply change the java.parameters to 8GB before load RJDBC package:

options(java.parameters = "-Xmx8048m")
library("RJDBC")

answered Jun 28 '16 at 12:49

fc9.30

2,293
20
19

score 5 · Answer 2 · answered Mar 16 '18 at 13:03

5

It would fail for me using:

options(java.parameters = "-Xmx8048m")
library("RJDBC")

However,

options(java.parameters = "-Xmx8g")
library("RJDBC")

worked.

answered Mar 16 '18 at 13:03

Sam

468
8
9

score 4 · Answer 3 · edited Jul 12 '17 at 14:07

4

You can increase the memory as below and restart your Rstudio and it worked for me.

memory.limit(size=10000000000024)

edited Jul 12 '17 at 14:07

msanford

11,803
11
66
93

answered Jul 12 '17 at 12:01

Nages

763
1
9
12

score 0 · Answer 4 · answered Jan 27 '21 at 15:31

0

Commenting in case anyone else comes across this thread with the same error. Updating RJDBC (install.packages("RJDBC")) worked for me.

answered Jan 27 '21 at 15:31

leesah anders

1

R RJDBC java.lang.OutOfMemoryError

4 Answers4