2019.1

l MySQL's performance has been slower than SQL Server and SQL Server Express
during our tests.
l By default, MySQL is configured not to allow any SQL request larger than 16 megs.
l In the event where 2 requests are made simultaneously on the same record, MySQL
will queue one of the requests and execute it once the first one is done. In extremely
rare cases this may cause a timeout on very large requests.
l
MSSQL (Microsoft SQL Server)
l All versions of the SQL Server are supported, including all Express versions.
l Database can be in any location, but performance will depend on the speed of the
connection between PReS Production and the SQL server.
l In the event where 2 requests are made simultaneously on the same record, SQL
Server will drop the most complex request. Resubmitting the PGC for processing
should resolve this issue. This, however, should happen only rarely.
l When configuring the ODBC connection, your must use the Microsoft version of the
driver, and not the Native SQL version of the driver. This is due to a technical
limitation of the native driver that interferes with the PReS Suite database requests.
Specifically for PlanetPress Capture, these considerations mean the following:
l
In Microsoft Access, the total size of stored document cannot be larger than 2GB and
this database will be very unstable in implementation with more than a few thousand
pattern sequences being used simultaneously. It is only suggested for small
implementation with less than 10 pens, or for demos.
l
In MySQL, the 16 megs packet size limit can be an issue if the PDFs created by Capture
are larger than this size; An error saying "MySQL Server has gone away" would appear in
this case. This can be fixed by configuring the max_allowed_packet setting in the MySQL
Configuration (Reference).
l
Also in MySQL, if a timeout occurs on simultaneous record access, resubmitting the PGC
for processing should resolve the issue.
l
In SQL Server, if one of your requests is dropped because of simultaneous accesses,
resubmitting the PGC should resolve the issue.
Security Considerations
PlanetPress Capture introduces new and efficient methods for digitally capturing the contents
of ink laded out on physical paper. However, because of its nature, some end users may voice
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