I’m really having trouble installing Pl/Java on Mac, any help would be appreciated.
I’ll describe the exact steps I’ve done in accordance with the README here, but I still get some errors that I cannot resolve.
(1) I’ve downloaded this version: pljava-i686-pc-linux-gnu-pg9.0-1.4.2
(2) I’ve located three files in the directory: pljava.jar, deploy.jar, pljava.so
(3) I’ve put the two .jars inside: /Library/PostgreSQL/9.0/lib
(4) I’ve put the .so inside: /Library/PostgreSQL/9.0/data
(5) I’ve modified the postgresql.conf as follows:
dynamic_library_path = '$libdir'
custom_variable_classes = 'pljava'
pljava.classpath = '/Library/PostgreSQL/9.0/lib/pljava.jar’
(6) I’ve also tried:
dynamic_library_path = '$libdir:/Library/PostgreSQL/9.0/lib/' (as well as...)
dynamic_library_path = '$libdir:/Library/PostgreSQL/9.0/data/'
(7) I then try to run:
Select sqlj.install_jar('/Software/Libraries/test_trigger.jar', 'samples', false);
Select sqlj.set_classpath(‘public’, ‘samples’);
Although, I keep getting this error:
WARNING: java.lang.NoSuchMethodError: Method org.postgresql.pljava.internal.Portal._fetch(JZI)I not found
ERROR: Unable to register native methods
********** Error **********
ERROR: Unable to register native methods
SQL state: XX000
This sounds like an issue is in not loading the right .jar. You mentioned in your comments that you were also having a problem with appropriate environment variables specifying where to load modules. This may in fact be your main issue. It looks like the equivalent environment variable is DYLD_LIBRARY_PATH though you can get more options by looking at man dyld and obviously if you are loading the wrong .so or .jar you will get errors like this.
Related
I'm having an issue with Oracle 11g R2 Design Center feature. When I click it, it gives me the error below:
C:\app[username]\product\11.2.0\dbhome_1\owb\bin\win32>call setowbenv.bat
WARNING: Unknown directive: SetSkipJ2SDKCheck
WARNING: Could not find jvm.cfg! in 'C:\app[username]\product\11.2.0\dbhome_1\jdk\jre\lib\jvm.cfg'
WARNING: Cannot find default VM "client" at C:\app[username]\product\11.2.0\dbhome_1\jdk
ERROR: Cannot find VM at: C:\app[username]\product\11.2.0\dbhome_1\jdk
Aborting!
I've tried many things to resolve this, as listed below:
Download 32b version of JDK (actually, I've downloaded multiple to rule out the version issue, both 32 and 64)
Point environment variable and path to JDK installation
Change sqldeveloper.cfg file to include SetJavaHome {path to JDK}
Move the jvm.cfg file to the directory it's expected to be at
Checked the paths to ensure the expected files were there
With step 4, after doing so I receive a different error message:
"Client VM is unsupported"
With step 5, after doing so I realized the path to the executable was not in:
C:\app[username]\product\11.2.0\dbhome_1\jdk
But instead in:
C:\app[username]\product\11.2.0\dbhome_1\jdk\bin
So, from all of this I feel that if I can change the path the Oracle Design Center is using to the correct path, then this should resolve. Problem is, I'm unsure where to find this. Also, if it helps I believe the Design Center uses JDeveloper, since the error suggests to view the Oracle 9i JDeveloper Install Guide at jdev\install.html. I tried going to this link but I'm not sure if it exists anymore because it took me to Google. I chose the most relevant link but still, I did not find any information regarding this issue. If anyone can help I'd be very thankful, this has been running me in circles for 3 days now.
TIA
I have tried to install the R package JavaGDon MacOS 10.14.6. My R version is 3.6.1. When I do instal.packages there is apparently no error, but when I do in R console:
library(JavaGD)
Error: package or namespace load failed for ‘JavaGD’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/3.6/Resources/library/JavaGD/libs/JavaGD.so':
dlopen(/Library/Frameworks/R.framework/Versions/3.6/Resources/library/JavaGD/libs/JavaGD.so, 6): Library not loaded: /Library/Java/JavaVirtualMachines/jdk-11.0.1.jdk/Contents/Home/lib/server/libjvm.dylib
Referenced from: /Library/Frameworks/R.framework/Versions/3.6/Resources/library/JavaGD/libs/JavaGD.so
Reason: image not found
It should work fine in macOS 10.14.
However, make sure your R and Java environments are correctly configured.
It might be a little bit of struggle to properly configure Java in R.
I suggest to start with simple Java code:
http://www.owsiak.org/r-java-11-and-making-sure-you-can-load-rjava/
to make sure you can actually use Java inside R.
In some cases it might be required to rebuild rJava package.
http://www.owsiak.org/r-3-4-rjava-macos-and-even-more-mess/
Anyway, I guess that first step is to make sure you can actually bind these two worlds.
I'm just starting out with Scala and have been following its Getting Started instructions. The second part of the instruction involves pulling the hello-world template by running the sbt new scala/hello-world.g8 command.
My problem is that it keeps on giving me this error:
Error: Could not find or load main class Anne
Caused by: java.lang.ClassNotFoundException: Anne
I'd like to know the reason for this, as well as any possible fix I might use.
The following is my insight and attempts on fixing this problem.
Insight:
1. I might have a problem with java installation/scala/sbt installation that needs this class Anne since even with other sbt commands like sbt sbtVersion I get the same error
Attempts:
1. Change command to retrieve from full url:
sbt new https://github.com/scala/hello-world.g8
2.(Edit): Previously I thought the repository scala/hello-world.g8 did not exist and tried getting from other repositories with no luck and with the same error as above. However it was pointed out below that the repository actually exists in this url https://github.com/scala/hello-world.g8, thanks Dmytro Mitin.
I was looking into the incorrect account (sbt) instead of (scala)
(Edit): Day 2
3. Uninstall/Reinstall sbt -- still getting the error
4. Checked if java running properly by compiling sample code and running ( successful )
I was actually running the command in Visual Studio Code's bash terminal. I tried running it with cmd and everything's now working fine.
So, here's my problem. I've got my ANTLR4 code successfully compiled, without errors and now I want to test it out. The ANTLR4 Documentation tells me, to test my applications, I shall do this:
java org.antlr.v4.runtime.misc.TestRig
I've tried this and got following error:
Error: Main Class org.antlr.v4.runtime.misc.TestRig couldn't be found or load.
I've checked if my CLASSPATH wasn't set, but everything was correctly set as it should be. I also tried moving the file directly to my test folder and opened CMD there and tried it again, I occur the same error. Searching in the Internet didn't help, as no one seemed to have occurred this error with ANTLR4 before.
Specs:
Java 1.7.0.55
ANTLR 4.4
There seems to be something wrong with your classpath, contrary to your belief everything is okay.
When I download the ANTLR 4 JAR and run TestRig:
wget http://www.antlr.org/download/antlr-4.4-complete.jar
...
java -cp antlr-4.4-complete.jar org.antlr.v4.runtime.misc.TestRig
I see the following on my console:
java org.antlr.v4.runtime.misc.TestRig GrammarName startRuleName
[-tokens] [-tree] [-gui] [-ps file.ps] [-encoding encodingname]
[-trace] [-diagnostics] [-SLL]
[input-filename(s)]
Use startRuleName='tokens' if GrammarName is a lexer grammar.
Omitting input-filename makes rig read from stdin.
yesterday we migrated to windows 7 in our firm and also updated the java packages and also R (to 2.14).
Then I tried to load the xlsx package, because I rely heavly on it but i get the following error:
Error : .onAttach in attachNamespace()
Error: .jnew("org/apache/poi/xssf/usermodel/XSSFWorkbook")
I tried the following, but it did not work:
Sys.setenv(PATH=paste(Sys.getenv("PATH"),"C:\\Program Files (x86)\\Java\\jre6\\bin\\client",collapse=';'))
options(java.parameters = "-Xmx1000m")
Since I never work with java i have no clue what I can do. Can you help me?
Thank you!
sessionInfo()
R version 2.14.1 (2011-12-22)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=German_Austria.1252 LC_CTYPE=German_Austria.1252
[3] LC_MONETARY=German_Austria.1252 LC_NUMERIC=C
[5] LC_TIME=German_Austria.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] xlsxjars_0.4.0 rJava_0.9-3
loaded via a namespace (and not attached):
[1] tools_2.14.1 xlsx_0.4.2
The interesting thing is, that the package XLConnect loads without problems.EDIT: Ok, it loads without problems but loading a workbook does not work:
Error: NoSuchMethodError (Java): org.apache.xmlbeans.XmlOptions.setSaveAggressiveNamespaces()Lorg/apache/xmlbeans/XmlOptions;
So maybe it is really no Java problem. But I don't want to re-write all my code to XLConnect!
Nobody any ideas what I could try?
I encountered exactly the same error and found a work-around. If you specify a library location on the network to install the package into, the error occurs.
## Example where error occurs:
install.packages('xlsx', lib='\\network\R\library')
library('xlsx', lib='\\network\R\library'))
However, if you change the default location for package installation within R, then you should be able to call the package library without the error. That is, simply typing install.packages('xlsx'), and having the package install automatically to its default location, allowed the package to work properly.