Hi Donatas,
Content in thread Webi Rich Client - Java Heap Space Error is not valid anymore with recent updates of BOE Client Tools.
You should check SAP Note 2062110 - Web Intelligence Rich Client may become unstable with large documents which gives details about a recent improvement in memory available for Web Intelligence Rich Client. Before this, you could get a maximum of 800 MB for JVM hosted in Rich Client executable memory space, and now you can go much further. (I have reached JVM heap of 1.5 GB without problem). Rich Client is still a 32bit application, but can now allocate up to 4 Giga Bytes of memory in best case scenario.
In this SAP Note, there is a reference to another SAP Note (1822075) which explains how JVM is configured for Web Intelligence with BOE Client Tools installation.
One additional information not present in SAP Note : JVM heap size specified in Windows registry may be reduced in case OS cannot allocate this amount of memory. This mechanism was already present previously, which is why no value higher than 800 MB could be achieved.
Please let me know if you still have problems configuring this JVM.
Regards,
Loic