- BlackBerry Enterprise Service 12 version 12.1
- BlackBerry Enterprise Service 10 version 10.1 to 10.2
- BlackBerry Collaboration Service
BlackBerry Collaboration Service 10.1 to 10.2.1:
The BlackBerry Collaboration Service uses Java and depending on the number of users being serviced, requires changing the maximum amount of memory that is allowed to be used by the JVM heap. By default the BlackBerry Collaboration Service is sized to support 1000 users with a maximum Java heap memory limit of 2GB. If planning on supporting more than 1000 users per instance of BlackBerry Collaboration Service, it will be necessary to adjust the maximum allowed memory limits of the Java Virtual Machine based on the following recommendations:
|Maximum Users||Suggested JVM Max Memory Heap Setting|
BlackBerry Collaboration Service 10.2.2 to 10.2.3 and BlackBerry Collaboration Service 12.1:
There have been significant memory usage improvements in these versions. By default the BlackBerry Collaboration Service is sized to support 5000 users with a maximum Java heap memory of 4GB. If planning on supporting less than 5000 users per instance of BlackBerry Collaboration Service, it is possible to adjust the maximum allowed memory limits of the Java Virtual Machine based on the following recommendations.
|Maximum Users||Suggested JVM Max Memory Heap Setting||Total Server Memory if using adjusted -Xmx values*||Total Server Memory if using default -Xmx values*|
|1000||1GB (1024M)||4 GB||6 GB|
|3000||2.5GB (2560M)||6 GB||8 GB|
|5000||4GB (4096) (default)||10 GB||10 GB|
* Memory usage may be slightly higher if all users have more active conversations than is typical.
Note: Refer to the Installation and Administration Guide for hardware memory requirements regarding the BlackBerry Collaboration Service.
Warning: System/database changes could potentially result in irreparable damage. Prior to making any system/database changes it is recommended that you perform a system/database backup.
To change the allowed maximum Java Heap size perform the following steps:
- Open regedit on the Windows server hosting the BlackBerry Collaboration Service.
- Back up the registry:
- Select HKEY_LOCAL_MACHINE.
- Click file > Export and choose the backup location.
- Expand HKLM > System > CurrentControlSet > services
- Select BES - BlackBerry Collaboration Service
- Double-click ImagePath and scroll through the value data to find -Xmx2048M or -Xmx4096M.
- Adjust 2048M or 4096M to the suggested value according to the tables above.
- Click OK.
- Restart the BlackBerry Collaboration Service service.
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