Java.lang.OutOfMemoryError" Error When Applying Oracle Weblogic Server Patch

While applying the latest PSU for Weblogic, you might get below error:

./bsu.sh -install -patch_download_dir=/home/oracle/fmw/product/112/utils/bsu/cache_dir -patchlist=S8C2 -prod_dir=/home/oracle/fmw/product/112/wlserver_10.3/

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at java.util.HashMap.createEntry(HashMap.java:897)
        at java.util.HashMap.addEntry(HashMap.java:884)
        at java.util.HashMap.put(HashMap.java:505)
        at com.bea.cie.common.dao.xbean.XBeanDataHandler.loadPropertyMap(XBeanDataHandler.java:778)
        at com.bea.cie.common.dao.xbean.XBeanDataHandler.<init>(XBeanDataHandler.java:99)
        at com.bea.cie.common.dao.xbean.XBeanDataHandler.createDataHandler(XBeanDataHandler.java:559)

Cause:
The memory arguments are in bsu.sh are not sufficient

Solution:
1) Go to <Middleware_home>/utils/bsu
2) Take backup of bsu.sh and edit as below

[oracle@aj-oamr2 bsu]$ diff bsu.sh bsu.sh_bkup
5c5
< MEM_ARGS="-Xms1024m -Xmx1024m"
---
> MEM_ARGS="-Xms256m -Xmx512m"

4) Apply the patch
[oracle@aj-oamr2 bsu]$ ./bsu.sh -install -patch_download_dir=/home/oracle/fmw/product/112/utils/bsu/cache_dir -patchlist=S8C2 -prod_dir=/home/oracle/fmw/product/112/wlserver_10.3/
Checking for conflicts.....
No conflict(s) detected

Installing Patch ID: S8C2..
Result: Success