AH00288: scoreboard is full, not at MaxRequestWorkers


Article ID: 128935


Updated On:


CA Single Sign On Secure Proxy Server (SiteMinder) CA Single Sign On SOA Security Manager (SiteMinder) CA Single Sign-On


We're unning a CA Access Gateway (SPS) and this one reports the error : 

  [Fri Mar 01 09:53:55.553673 2019] [mpm_worker:error] [pid 8594:tid 
  4152100608] AH00288: scoreboard is full, not at MaxRequestWorkers 

We'd like to know how to fix it. 


The error is a known bug in Apache, which is solved in Apache 2.4.25 : 

  Bug 53555 - Scoreboard full error with event/ssl 

  A high-traffic web server using event MPM and mostly receiving HTTPS 
  requests frequently got the error "scoreboard is full, not at 
  MaxRequestWorkers" and showed very bad performance. 


  Fixed in 2.4.25 


The CA Access Gateway (SPS) 12.52SP1CR01 run Apache 2.4.4 

  Third-Party Software Acknowledgments 

  Apache HTTP Web Server 2.4.4 


The CA Access Gateway (SPS) 12.52SP1CR09 runs Apache 2.4.33 which will 
solve this issue. 

  CA Access Gateway 

  | SalesForce | Internal | Issue Description                      |
  | Case       | Defect   |                                        |
  | Number     | ID       |                                        |
  | 00949107   | DE342765 | OpenSSL is upgraded to OpenSSL 1.0.2o. |
  |            |          | Apache is upgraded to Apache 2.4.33.   |


  Please note that Policy Server 12.52SP1CR01 is Out of Support : 

  CA Single Sign-On (formerly CA SiteMinder) Release and Support 
  Lifecycle Dates 

  12.52 February 28, 2019 - EOS 



Policy Server 12.52SP1CR01 on RedHat 6; 
CA Access Gateway (SPS) 12.52SP01CR01 on RedHat 6; 


Upgrade the CA Access Gateway (SPS) to the latest version in order 
to get the Apache running on 2.4.33.