libjvm.so: cannot open shared object file: No such

问题:

Trying to install the rJava package on R, on my 14.10 ubuntu, using this code

if (!require(rJava)) install.packages('rJava')

got few errors related to java including jni problems, after reinstalling the jdk, and tried to run the same code again, got that error

Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/usr/local/lib/R/site-library/rJava/libs/rJava.so':
  libjvm.so: cannot open shared object file: No such file or directory
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/usr/local/lib/R/site-library/rJava’
Warning in install.packages :
  installation of package ‘rJava’ had non-zero exit status

The downloaded source packages are in
    ‘/tmp/RtmpfFjrp0/downloaded_packages’
Warning message:
In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,  :
  there is no package called ‘rJava’

looked for solutions, to find just about everyone suggesting (for x64) to execute those commands

export LD_LIBRARY_PATH=/usr/lib/jvm/java-8-oracle/lib/amd64:/usr/lib/jvm/java-8-oracle/jre/lib/amd64/server
sudo R CMD javareconf 

but that didn't work, is there anything else I can do? I will provide any needed details

回答1:

I was getting the same error when I was trying to load rJava in RStudio. The following solution worked for me

1) sudo rstudio-server stop
2) export LD_LIBRARY_PATH=/usr/lib/jvm/jre/lib/amd64:/usr/lib/jvm/jre/lib/amd64/default
3) sudo rstudio-server start

After performing the above steps, I was able to run the following successfuly in RStudio

> library("DBI")
> library("rJava")
> library("RJDBC")

回答2:

To solve this,

1. Run

   sudo R CMD javareconf

2. Add the following to to /etc/environment. This will then be set every time your machine restarts.

   LD_LIBRARY_PATH=/usr/lib/jvm/default-java/jre/lib/amd64/server/

   (change to your path)

3. Run the following:

   source /etc/environment

4. rstudio server restart

回答3:

in case none of the above works, try this and thank me later (generic answer) :)

R CMD javareconf -e
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$JAVA_LD_LIBRARY_PATH

回答4:

• I solved a similar issue by running the following command every time I want to open RStudio. Go to the folder which contains the rstudio executable, open up the terminal and type:

  LD_LIBRARY_PATH=/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home/jre/lib/server: open -a rstudio

  Of course you have to change the path according to your Java version.

• If the previous solution does not work, try reading this article: http://allanino.me/blog/programming/installing-some-r-packages/.

• If this solution does not work too, the last chance you have is to install rJava compiling it from the source code.

回答5:

If someone is coming here now, Please try the approach below:

Steps:

1. Find your R location. It will be stored in rsession-ld-library-path in rserver.conf file. Or just by doing which R. The location usually is /usr/lib64/R/lib or /usr/lib64/microsoft-r/3.3/lib64/R/lib

2. Find the libjvm.so file which is usually in the usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server path depending on which jre you're using. Check in $JAVA_HOME environment.

3. Create a symlink using ln -s sudo ln -s /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/server/libjvm.so /usr/lib64/microsoft-r/3.3/lib64/R/lib/libjvm.so

4. Restart R server

回答6:

Well, as @user3673 has pointed out this, the solution for me was change the following line in /usr/lib/R/etc/ldpaths:

: ${R_JAVA_LD_LIBRARY_PATH=${JAVA_HOME}/lib/amd64/server}

by this one:

: ${R_JAVA_LD_LIBRARY_PATH=${JAVA_HOME}/jre/lib/amd64/server}