JDBC (Java Database Connectivity) Reader/Writer
FME can access attribute data held in databases accessible via JDBC. It provides generic non-spatial access to a wide number of database formats through JDBC drivers. The advantage of the JDBC is that it is available on all platforms supported by FME.
Once configured, the JDBC format allows access to many database formats.
See the FME Community for information about the compatibility of various JDBC drivers with FME, and to view FME Workbench examples.
JDBC Product and System Requirements
Format |
FME Platform |
Operating System |
||||
---|---|---|---|---|---|---|
Reader/Writer |
FME Form |
FME Flow |
FME Flow Hosted |
Windows 64-bit |
Linux |
Mac |
Reader |
Yes |
Yes |
No |
Yes |
No |
No |
Writer |
Yes |
Yes |
No |
Yes |
No |
No |
Usage Notes
The performance of this format is dependent on the amount of memory allocated to the Java Virtual Machine (JVM). The following environment variables allow you to specify memory available to Java Plugins:
FME_JVM_MIN_HEAP_SIZE
Initial heap size for initializing the JVM. If unset, the default value is 1024K.
This variable must be set in multiples of 1024 and greater than 1 MB. To indicate kilobytes, megabytes, or gigabytes, append k or K, m or M, or g or G, respectively. For example, any of these values is acceptable:
6291456
6144k
6m
FME_JVM_MAX_HEAP_SIZE
Maximum heap size for initializing the JVM. If unset, the default value is 16384K.
This variable must be set in multiples of 1024 and greater than 2 MB. To indicate kilobytes, megabytes, or gigabytes, append k or K, m or M, or g or G, respectively. For example, any of these values is acceptable:
83886080
81920k
80m