Library Systems Mirlyn/Aleph

About Mirlyn

Mirlyn is the library catalog of the University Library, Clements, Bentley, and UM-Flint libraries. It utilizes Aleph software from Ex Libris. Mirlyn also provides patron services such as circulation history information, library-to-library lending, and others. Click on Mirlyn to go directly to Mirlyn now.

Mirlyn Information and Help

Authorities: Latest info on authorities processing

Development OPAC: Staff may occasionally need to view the "MIRLYN Dev" OPAC. Note that this data is not current and should be viewed for testing purposes only.

Passwords: Staff are now responsible for their own password. You can change it when you want, and should change it periodically. For more information about changing your password read: Mirlyn Passwords

Permissions: Information on Aleph permissions

Record batch loads: records are loaded into MIRLYN from RLIN, MARCIVE and other batch services weekly. New records are usually available for use on Tuesdays. Information on fileload routines

Record load statistics: Weekly fileload statistics

Service packs: Latest service pack documentation, and Service pack implementation procedure

System scheduled downtime: Reserved system unavailability: Sundays, 5-10 a.m. EDT (infrequently needed).

Version 18: Aleph version 18 is now in production. Read the 8/29/06 Update (staff only). Please report any problems to aleph-support@umich.edu

SFX 3.0: SFX 3.0 is in development, with an expected move to production in August 2005.

Verde: Verde is under review now.

Reports and Special Requests

Library Systems can provide a variety of special reports and services for library staff, often involving Mirlyn files and records. Currently we are developing Aleph reporting. To read about recent changes to this service or to make a request, click below:
Aleph Support and Library Systems Requests

Useful Documentation

Mirlyn LANGUAGE codes & frequency (May 2007)
Mirlyn LANGUAGE codes & frequency (May 2005)
Mirlyn LANGUAGE codes & frequency (May 2002)
MARC 21 Concise Format for Bibliographic Data (leaving this site)
MARC 21 Concise Format for Authority Data (leaving this site)
MARC21 Concise Format for Holdings data (leaving this site)
MARC country codes for fixed fields (leaving this site)
MARC Code List for Languages (leaving this site)
Geographic Names Server (US) (leaving this site)