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Increase Java Memory For Pentaho Data Integration

Pentaho runs inside a Java virtual machine, and hence is bound by the properties of that VM. These optimisations can apply to just about any Java application, including the Pentaho BI Server and GUI tools. Method to increase memory allocation: Open the file spoon.sh or spoon.bat in a text editor Look for a section that looks like this: # ****************************************************************** # ** Set java runtime options                                     ** # ** Change 256m to higher values in case you run out of memory.  ** # ****************************************************************** OPT="-Xmx256m -cp $CLASSPATH -Djava.library.path=$LIBPATH -DKETTLE_HOME=$KETTLE_HOME -DKETTLE_REPOSITORY=$KETTLE_REPOSITORY -DKETTLE_USER=$KETTLE_USER -DKETTLE_PASSWORD=$KETTLE_PASSWORD -DKETTLE_PLUGIN_PACKAGES=$KETTLE_PLUGIN_PACKAGES" Change the -Xmx parameter to alter the maximum heap size, e.g. -Xmx1024m
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Different Match Models in tMap with example

Unique Match:     (Also called Last match) If several matches are found in the Inner Join, i.e. the last row matching the explicit join as well as the filter will be added to the output flow. First Match: If several matches are found in the Inner Join, i.e. the first row matching the explicit join as well as the filter will be added to the output flow. All Match: If several matches are found in the Inner Join, i.e. rows matching the explicit join as well as the filter, all of them will be added to the output flow Example: deptid   sales 1           1000 2           2000 3           3000 2           5000 3           6000 Outputs: 1. Unique match deptid   sales 1           1000 2           5000 3           6000 2. All matches deptid   sales 1           1000 2           2000 3           3000 2           5000 3           6000 3. First match deptid   sales 1           1000 2           2000 3           3000
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Simple Transformation from a csv to Excel Output

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Lets start with a basic transformation to convert your comma seperated values file input to excel output Step 1: Launch kettle 4.1 Step 2: select file>new>transformation Step 3: drag input>csv input & output>csv output on the workspace Step 4: Arrange them one after another & create a hop/connection between them by holding the shift key & dragging the arrow from center of csv input step to excel output step Step 5 : double click the csv input step & configure as shown in the figure above. Choose the filenae location & select get fields button to auto retrieve fields. Step 6: double click the excel output step & give the desired path location of the new excel file which is to be created, click the fields tab & select the get fields button to retrieve all the fields currently present in the stream. Step 7: Click the run button above the workspace else Select --> Action>Run from the menu. Your file is automatically crea
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