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  Online Catalog Home

  About the Catalog
  FAQs - What's New
  Known Problems

  UNICODE:
  Displaying Non-Roman
  Characters

  SEARCHING:
  Basic Search Overview
  Keyword Searches:
  - Keyword
  - Title Keyword
  - Author/Creator
  - Subject Keyword
  - Name/Title
  - Series/Uniform Title
  Other Searches:
  - Expert Search
  - Title Begins With
  - Author/Creator Browse
  - Subject Browse
  - Call No. Browse (LC)
  - Call No. Browse (Other)
  - Number Search
  - Author Sorted by Title
  Guided Search


  Limiting Searches
  Search History
  Boolean Searching

  INDEX CODES:
  for Guided Searches
  for Expert Searches

  SEARCH RESULTS:
  Brief Record
  Subjects/Content
  Full Record
  MARC Tags


  Headings List
  Titles List
  Titles List (Keyword)
  References/Scope Notes
  Save, Print, Email

  OTHER TOPICS:
  Headings List Types
  Material Types
  Database Selection
  Icons, Buttons & Tabs
  Session Time-Outs

Known Problems

Below is a list of problems with the current version of the software used for the Library of Congress Online Catalog. These have all been reported to the Library's system vendor, Ex Libris.

The list includes a description of the problem, and suggestions for working around the problem (if any).

General Searching

Problem: 1. Hyperlinked searches on Series titles sometimes fail.
Description:

If a series title has an initial article (A, The, An. etc.), hyperlink searches in the "Full Record" display do not retrieve correct records.

Status:

Reported to vendor -- pending

Workarounds:

Cut and paste the title, without the initial article, into a new search box (with "title" search selected) on the "Basic Search" screen.


Problem: 2. Display problems with quoted phrases ("medieval history," "new guineas") in Guided searches.
Description:

Quoted phrases are searched correctly. However:

  1. the Search for: box in the Quick Search option at the bottom of the Titles list is blank;
  2. if the user chooses to Edit these searches in Search History, the resulting Search for: box is also blank.
Workarounds:

Either re-key the search term, or copy-and-paste the quoted phrase from the "You searched:" text at the top of the Titles list or from the Search History display.


Call Number Browse

Problem: 3. Blank Title List display appears after re-executing a Call Number Browse search.
Description:

A blank title list can result following certain Call Number Browse searches. Most often this will occur after (a) doing a call number browse search, then (b) displaying a single record from the title list, and then (c) re-executing the search from Search History.

Workarounds:

In Search History, select the record number for the search in the Edit column, then re-execute the search from the Basic Search screen.


Printing, Saving or Emailing Records

Problem: 4. Emailing records with non-Roman characters or diacritic marks fails.
Description:

When emailing records containing non-Roman (unicode) characters or any diacritic marks, the email received will not contain the entire line of text containing that string of text. Records with no diacritic marks will be emailed in tact.

Workaround:

Use the Print or Save functions, instead, to get copies of records you retrieve in your searches of the catalog.


Problem: 5. Unable to save MARC records with certain browser versions
Description:

When attempting to save records in MARC format, users get a message that says Your Email request failed!, even though they are saving, not emailing.

Workarounds:
  1. use a different version of browser.
  2. save MARC records using a Z39.50 client.
    See Frequently Asked Question #12 for more information

Problem: 6. Unable to Print or Email more than 75 records at once.
Description:

System fails to Print or Email records if the total number on one screen exceeds 75.

Workarounds:

The Library has reduced the maximum number of records that can be saved from 100 to 75 until the problem is resolved.


Search History

Problem: 7. Sorting records adds additional "ghost" entries to the Search History list.
Description:

Every time a search result is re-sorted, the system adds another, spurious entry to the History list of searches, as if the search had actually been run multiple times. That is, if the results for a search on "tax reform" were re-sorted 3 times, "tax reform" would appear in Search History 4 times -- once for the original search, 3 times for each re-sort.

Workarounds:

None. The additional entries just make the Search History list that much longer.


Problem: 8. Multiple sorts on a Titles List from a "Subject" or "Author/Creator" browse search can (a) result in display problems in Search History, and (b) adversely affect editing/re-executing searches from the History list.
Description:

If the Titles List results of a Subject or Author Browse are re-sorted two or more times in succession (e.g., sorting the set by Date Descending, then re-sorting again by Title), the following problems occur:

  1. The "You searched=" text at the top of the screen, and each entry in Search History, will read "Simple Search" rather than "Subject" or "Author/Creator".
  2. Attempts to Edit an entry in Search History having the spurious "Simple Search" text will re-execute the search, but not allow editing.
  3. Attempts to re-execute the original search will usually result in a "Search failed" condition.
Workarounds:

Avoid doing two or more successive re-sorts of Titles Lists after Subject or Author Browse searches. If you need to resort the set more than once: (1) perform the first sort, (2) view at least one bibliographic record, (3) return to the Titles List and perform the second sort.

Adding Limits to Search Results

Problem: 9. If you use the "Add Limits to Search Results" function to set 2 or more post-search limits in succession, you will be presented with a blank Titles List.
Description:

When using "Add Limits to Search Results," you select one limit (e.g., "Language=English") and apply it, then immediately, you select the "Add Limits to Search Results" function again to apply another limit (e.g., "Type of material=Book"), the second limit will return a completely blank Titles List.

Workarounds:

Either:
1. Set all desired limits at one time, then apply them as a group, or
2. Apply the first limit, display at least one bibliographic record, then apply the next limit.

Record Display Problems

Problem: 10. Records with MARC field 505 contents notes larger than 200 characters time out the MARC Tags view.
Description:

When you try to display a MARC record (MARC Tags view) AND there is a 505 Contents Note that is larger than 2000 characters, the display times out.

Workarounds:

None. The MARC Tags view will not be available. Use other views.

Browser Problems

Problem: 11. AOL Explorer users cannot get results from the LC Online Catalog.
Description:

Users of AOL Explorer do not have access to all the functionality in the LC Online Catalog. For example, AOL Explorer users receive the message "no entries found" when there are records in the LC Database, or users cannot view individual titles in search results or select an option from the drop-down menu in order to save, print or email records. AOL Explorer is not one of the browsers that is supported by the Library's software vendor.

Workarounds:

There is an option in AOL to go to the "Start" button to launch Internet Explorer. IE is a supported browser, as are Firefox and Netscape.

Use the browser's [Back] button to resume searching.

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Library of Congress Online Catalog - catalog.loc.gov
Library of Congress Home Page
November 4, 2008