Frequently Asked Questions Frequenty Asked Questions


Here you will find commonly asked questions of the ResCarta support team...

Latest JAVA supported version is  1.8.0_181


The most asked question concerns the use of 32bit JAVA on a 64bit machine.  It you are using a 64bit operating system, download the 64bit JAVA from Oracle.  The current url for JAVA 8 from Oracle is.   

Take care not to update to unsupported versions of 9, 10 or 11

For those running "ix" operating systems ...

$ sudo apt-get install openjdk-8-jre


$ su -c "yum install java-1.8.0-openjdk"


During the installation of the ResCarta Toolkit you will see that the installer selects 32bit or 64bit options based on your installed JAVA. If you run 32bit JAVA on a 64bit machine you will get poor performance and have access to only one gigabyte of memory.

Most ResCarta problems over the years involve early untested releases of JAVA by Oracle. See the history of releases at wikipedia.  If you see a release date within a day or two of another release date, chances are you will be experiecing some malfunction.  We advise updating JAVA only if you need to do so for some known reason.




No Subjects in my OAI xml files

I used the OAI perl script and the resulting xml files do not contain subject information.   I know the data is in my collection mangager view.  What's up with that?

There is a known bug in version 2.0 of the 

If you use lower case text for the authority, subjects will not be extracted properly.  Please download the 

2.2 version of the ResCarta OAI kit and replace only your file.  It is case independent now.  


Windows Installer EXE fails (2009-09)

When I attempt to install the ResCarta Toolkit from the Windows .EXE file, I get a BOING!# sound and then nothing?

We have had this reported on certain newer Windows XP systems with more than 2 gigabytes of ram.  The work around is to install from the .JAR file.  Just download the ResCarta toolkit jar installer and double click like you would the exe file.

We have yet to determine the culprit.   We can have the same version, service pack, and updates on two similar but not exact hardware systems and see the BOING!# on one and not the other.  Hopefully we can resolve this shortly.


NOTE: It has been determined  that the Java virtual machine is taking more memory that it can use. Machines witn 2 gigabytes of ram on Windows XP will take 1638 megabytes of ram for the JVM.  Any machine running Windows XP with more than 2 gigabytes of ram will exceed the XP JVM limit of 1650 megabytes.   We have corrected this problem in version 2.2.1.

More memory needed

How do I work on larger collections without running our of memory ?


The start batch files and sh files for RcTools have a setting for your Java maximum memory.  You can make this larger for your collections by adjusting the -Xmx setting.  The default is -Xmx512m for 512 megabytes of memory.  If your tool reports an out of memory error you can increase this setting to available memory in the machine less start up.  So a machine with 2 gigabytes of ram could easily  be set to -Xmx1024m for this setting.
You can find the batch files under your installation directory.  For Windows the default location is C:\Program Files\RcTools\bin\   and on   Mac OSx  installs the default is the  /Applications/RcTools/bin directory.

JHOVE and ResCarta

Harvard's JHOVE and ResCarta Data

Jhove invalidates some ResCarta accepted tiff images.

If you are running the Harvard file validator called JHOVE and receive the following error on tiff images in your ResCarta collection.files

Status: Not well-formed”

Add the following line to your configuration file (jhove.conf) in your home directory or create a custom configuration file with this line and use the -c parameter with JHOVE.


Change your tiff module from...


 to the following...



After this parameter has been added you will not longer get a “Not well formed” message but you will get an informational message about the values that may not be word aligned. These images have addition tags not modified by the ResCarta data conversion tool and are acceptable TIFF images. The images will then be noted as " Well-Formed and valid" by JHOVE with an informational message like the one below...


InfoMessage: Value offset not word-aligned: 493



JHOVE and the Unknown TIFF IFD tags 5687,5688 and 5689.


These tags are the location of the ResCarta metadata which are defined in the ResCarta specifications. These tags were declared PUBLIC when regisstered with the TIFF tag registry with Adobe Corporation. 5697 = MODS XML data, 5688 = Word data, 5689 = Word location and font data.


InfoMessage: Unknown TIFF IFD tag: 5687

InfoMessage: Unknown TIFF IFD tag: 5688

InfoMessage: Unknown TIFF IFD tag: 5689