Hi Vishal, Can you please attach the 'merovingian.log' file from the dbfarm directory? After step 11, you must enable the R integration for the newly created database, before starting it: monetdb set embedr=true testdb1 This in unlikely to be the cause of the "failed to open up a communication channel" error, but is needed to actually enable the R integration. Also, it is not necessary to configure, make, install, create dbfarms and start databases with sudo. A regular user should also be able to do that, as long as he has sufficient write access permissions for the target directories. Please try that as well. A side note: If you want to get better performance from your database (and not planning to attach a debugger to your it), it's recommended to set the '--enable-optimize' option when configuring the build at step 6. Best regards, Dimitar

On 2015-May-14, at 01:49 , Vishal Virmani wrote:

Hi Hannes

As you suggested i checked, i am not having any multiple installation of MonetDB.

Further i have done a fresh installation. I am including the messages in the merovingian file as well for your reference.

Steps followed were

Step 1 : I created a clean VM with Ubuntu 14.04 server.

Step 2: Installed R-3.2.0 from source files. I checked the R environment it is working fine.

Step 3: Downloaded MonetDB source files from http://dev.monetdb.org/downloads/sources/Oct2014-SP3/MonetDB-11.19.11.tar.xz http://dev.monetdb.org/downloads/sources/Oct2014-SP3/MonetDB-11.19.11.tar.xz

Step 4: Created an empty directory sourcefiles in which i downloaded MonetDB-11.19.11-tar.xz

Step 5: Unpacked the source files

Step 6: Executed the command sudo ./configure --enable-rintegratioin=yes

The result of executing the above command generated the following output:

Output of running configure command

Enabled/disabled build options:

strict is disabled (by default) assert is disabled (by default) debug is disabled (by default) optimize is disabled (by default) developer is disabled (by default) instrument is disabled (by default) profile is disabled (by default)

Enabled/disabled components:

gdk is enabled monetdb5 is enabled sql is enabled geom is disabled (geos library required for geom library) gsim is disabled (gsl library not found) fits is disabled (cfitsio library not found) jsonstore is disabled (by default) microhttpd is disabled (by default) rdf is disabled (by default) rintegration is enabled datacell is disabled (by default) odbc is disbaled (unixODBC library required for ODBC driver) jdbc is disabled (ant is required to build MonetDB JDBC) control is disabled (ant is required to build merovingian control library) testing is enabled

Step 7 : Executed sudo make and make install respectively. They are working fine.

Step 8 : Checked sudo mserver5 --version , it gave the the desired output

Step 9: Created a dbfarm using the command sudo monetdbd create /mydbfarm

Step 10 Started the dbfarm by running sudo monetdbd start /mydbfarm, this also get executed successfully

Step 11. Created a sample database testdb1 using command : sudo monetdb create testdb1. This also gets executed fine.

Step 12 Upon execution of command sudo monetdb start testdb1, it fails showing me an error in merovingian file and on console i am generating following output

starting database 'testdb1'...FAILED start: starting 'testdb1' failed: datbase 'testdb1' started up, but failed to open up a communication channel.

Looking forward to your suggestion

Regards Vishal Virmani +91 99108 47231

Regards Vishal Virmani +91 99108 47231 @poisoncreed

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Today's Topics:

1. Facing issues in implementing Embedded R in MonetDB-11.19.11 (Vishal Virmani) 2. Re: Facing issues in implementing Embedded R in MonetDB-11.19.11 (Hannes M?hleisen)

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Message: 1 Date: Tue, 12 May 2015 05:29:13 +0530 From: Vishal Virmani mailto:virmani.vishal@gmail.com> To: users-list@monetdb.org mailto:users-list@monetdb.org Subject: Facing issues in implementing Embedded R in MonetDB-11.19.11 Message-ID: mailto:GEuAP17rqVPCfVWySShJa%2BrnyUPHkNbvrjbLw@mail.gmail.com> Content-Type: text/plain; charset="utf-8"

Hi

I am implementing Embedded R in MonetDB version 11.19.11. My environment is VM with Ubuntu 14.04 Server. I have build MonetDB from source and R as well as from source. Running the command sudo mserver5 --version shows me the desired output.

When i try to invoke a database using sudo monetdb start testdb1 command, where testdb1 is a database i successfully created, it repeatedly throws up an error...database 'testdb1' started up, but failed to open up a communication channel.

Upon checking the associated merovingian log file i see further messages saying the object code to rapi.prelude missing.

Any way to resolve this...?

Regards Vishal Virmani @poisoncreed