System information

159
CONFIGURING AND ADMINISTERING COLDFUSION 9
Using Verity Utilities
Last updated 2/21/2012
You can safely squeeze deleted documents for a collection at anytime, because the mkvdk utility ensures that the
collection is available for searching and servicing through its self-administration features. The application does not
need to temporarily disable a collection to squeeze deleted documents, because when a squeeze request is made, the
mkvdk utility assigns a new revision code to the collection. After a squeeze has occurred, the next time the application
accesses the collection, the Verity engine notifies the application that dramatic changes have been made, and points
the application to the new collection data.
Squeezing deleted documents out of a collection is a significant update to the collection. If users are reviewing search
results at the time when squeezing occurs, the search results might be invalidated after the squeeze operation.
Optimized Verity databases
The Verity database (VDB) is the fundamental storage mechanism responsible for supporting dynamic access to
documents in collections. A VDB consists of simple tables with rows and columns that relate to each other by row
position. VDB tables are not relational, and their architecture supports quick and efficient searching over textual data.
A VDB consists of segments that are packed into a single file. One of the advantages of having one packed VDB file is
optimized search performance. The fewer files that need to be opened during search processing, the faster the search
performance.
The VDB optimization option optimizes the packing of a collection’s VDBs. When VDBs are built during normal
indexing operations, the segments are not stored sequentially in the one-file VDB file system. As a result of VDB
optimization, performance can be improved by reserializing the packed segments in the VDBs so that all segments are
contiguous, and VDBs can grow in size. Optimized VDBs can grow up to 2 GB, as opposed to the maximum 64 MB
for an unoptimized VDB.
Using this option might degrade your indexing performance when certain indexing modes are set for the collection.
Performance tuning options
The mkvdk utility provides the following performance tuning options:
Using the rck2 utility
The rck2 command-line utility lets you search collections associated with a Verity server. The rck2 executable file,
which starts the rck2 utility, is located in the platform/bin directory. For more information on the specific location of
this directory, see
“Location of Verity utilities” on page 150.
The rck2 syntax
Use the following syntax to start rck2 from the command line:
rck2 -server <servername> -port <portno>
For example:
c:\coldfusion9\verity\k2\_nti40\bin\rck2 -server localhost -port 9901.
The following table describes rck2 syntax elements:
Option Description
-maxfiles num Sets the maximum number of files that the mkvdk utility can have open at once. The default is 50.
-diskcache num Sets the size of the mkvdk disk cache in kilobytes. The default is 128.