Adobe 22001438 - Acrobat - PC Using Manual page 229

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Using Help | Contents
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Purging and rebuilding indexes
When you rebuild an index, entries for deleted documents and for the original versions of
changed documents remain in the index but are marked as invalid.This incremental
updating slightly increases the time required for searches that use the index. It also can
greatly increase the disk space required by the index. For example, if every document
indexed has changed since an initial build, the space required for the index is doubled.
Because these increases accumulate over time, you should occasionally purge the index
before rebuilding it.You should also purge and rebuild if you change the optional search
features supported by an index or change the stopwords list used to build an index.
Otherwise, search performance may be slowed or search results distorted.
To purge and rebuild an index:
1 Select Tools > Catalog and click the Open Index button.
2 Locate and select the index-definition (PDX) file for the index.
3 Click the Purge button.
The index is purged. If the index is currently in use, users are given time to complete
queries in progress before the purge begins.
The default "time before purge" is 905 seconds, which is equal to 15 minutes. Users receive
an "Index unavailable for searching" message if they attempt to enter a new query.
4 When the purge is complete, select the PDX file (for the index), and click Open.
5 Click the Build button.
Moving document collections and their indexes
You can develop and test an indexed document collection on a local hard drive and then
move the finished document collection to a network server or disk. An index definition
contains relative paths between the index-definition (PDX) file and the folders containing
the indexed documents. If these relative paths are unchanged, you don't have to rebuild
the index after moving the indexed document collection. If the PDX file and the folders
containing the indexed documents are in the same folder, you can maintain the relative
path simply by moving that folder.
If the relative path changes, you must create a new index after you move the indexed
document collection. However, you can still use the original PDX file.To use the original
PDX file, first move the indexed documents.Then copy the PDX file to the folder where
you want to create the new index, and edit the Include and Exclude lists as necessary.
If the index resides on a drive or server volume separate from any part of the collection it
applies to, moving either the collection or the index will break the index. If you intend to
move a document collection either to another network location or onto a CD, create and
build the index in the same location as the collection.
Using Help | Contents
Searching and Indexing Document Collections
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