Skip to main content
ExLibris

Knowledge Assistant

BETA
  • Subscribe by RSS
  • Back
    Aleph

     

    Ex Libris Knowledge Center
    1. Search site
      Go back to previous article
      1. Sign in
        • Sign in
        • Forgot password
    1. Home
    2. Aleph
    3. Knowledge Articles
    4. Analysis of OPAC response time

    Analysis of OPAC response time

    1. Last updated
    2. Save as PDF
    3. Share
      1. Share
      2. Tweet
      3. Share
    1. Description
    2. Resolution
    • Article Type: General
    • Product: Aleph
    • Product Version: 20, 21, 22, 23

    Description

    Aleph OPAC response time is slow. 

    Resolution

    Check the Oracle indexes for the Bib, ADM, and HOL libraries with the all_indexes SQL, as described in " How to tell if Oracle indexes for a particular library are present & VALID ".

    Check tab_base.lng for severe truncation, as described in the article " Logical base response very slow ".

    See if searches on common words with many hits take longer than other searches. If so, see article " Keyword searching on common words takes extremely long; multiple z97's "

    grep the OUT lines in the www_server_499n.log into a file grep.www.out (these include every time the OPAC user hits Enter):

    >grep OUT www_server_4991.log > wwwOUTgrep

    Then do greps  of this wwwOUTgrep file to analyze the numbers of transaction responses in specific time ranges (seconds):

    aleph@aio0001(a23_1):~/a23_1/log>grep -c 'OUT 0.' wwwOUTgrep
    nnnnnn
    aleph@aio0001(a23_1):~/a23_1/log>grep -c 'OUT 1.' wwwOUTgrep
    nnnn
    aleph@aio0001(a23_1):~/a23_1/log>grep -c 'OUT 2.' wwwOUTgrep
    nnnn
    aleph@aio0001(a23_1):~/a23_1/log>grep -c 'OUT 3.' wwwOUTgrep
    nnn

    If greps show that almost all of the times are ten seconds or less and you are seeing much longer response times, it could be a communication issue.  Please consult the article  ELAPSED-TIME" in pc_server logs and actual response time  in this regard.

    See also articles:   

    Web OPAC and GUI Search keyword searches (Find), extremely slow / time out  

    Logical base response very slow 

    Keyword "Exact Title" searches time out and shut down the session

     

     


    • Article last edited: 13-Nov-2017
    View article in the Exlibris Knowledge Center
    1. Back to top
      • Analysis of "Item or like copy is on shelf. Cannot place hold request" message
      • Analytical records not linked in Primo
    • Was this article helpful?

    Recommended articles

    1. Article type
      Topic
      Language
      English
      Product
      Aleph
    2. Tags
      1. 18.01
      2. contype:kba
      3. Prod:Aleph
      4. Type:General
    1. © Copyright 2025 Ex Libris Knowledge Center
    2. Powered by CXone Expert ®
    • Term of Use
    • Privacy Policy
    • Contact Us
    2025 Ex Libris. All rights reserved