iam setting the max heap size to 1GB in java 1.4, but sometimes during the run of my application i do get Out of memory error.
If increasing the max heap size is the solution then how do i do that?
I have set the initial heap size to 64MB while my machine RAM is 2GB.
Please advice.
Thanks in advance
> iam setting the max heap size to 1GB in java 1.4, but
> sometimes during the run of my application i do get
> Out of memory error.
> If increasing the max heap size is the solution then
> how do i do that?
> I have set the initial heap size to 64MB while my
> machine RAM is 2GB.
There are a number of contradictions in the above.
If you set your max heap size then you already know how to set it.
If you set it to 1 GB then it isn't 64MB.
> Do i need to increase heap size in steps for e.g.
> 100MB,500MB, and so on. or just randomly?
No need to increase it in steps. Just use the max heap size (-Xmx) that you think you need. The hard part is determining what you need. You say with -Xmx1g you sometimes get OutOfMemoryError. Do you expect that your app really uses 1G of heap or more? If so, that's fine, increase the -Xmx value to 1.5g (i.e., -Xmx1536m). If not, then try to find out what is consuming all the (presumably unnecessary) data.
FWIW, an initial heap size of 64m is really quite small if you eventually grow to 1G. I would try a larger value (say 512m).
