64bits requirements Jahia 7.3 Jahia 8 Legacy

Not enough space for object heap

Question

Cannot start Jahia on 32 bit Windows 7. Command prompt exits instantly on startup. 

Error: Could not reserver enough space for object heap

Cause

Jahia requires minimum 2GB allotted to start. 32bit JVM on Windows has a max memory of 1.4-1.6GB

Solution

Use 64bit OS + JVM