Unable to create an instance of jvm

Question

hi ,
sqldeveloper-4.0.2.15.21 ,
when i click the sqldeveloepr file , i face this error
Unable to create an instance of java virtual machine located at path :
c:\program files \java\jdk\1.7.0_65\jre\bin\client\jvm.dll
thanks

Answer 1

this is my product.conf file
# The format of this file is:
# Directive  Value
# with one or more spaces between the directive and the value. This file
# can be in either UNIX or DOS format for end of line terminators. Use UNIX
# style '/' path separators, although on Windows some directives, such as
# SetJavaHome, can take '\' path separators.
# By default, the product launcher will search for a JDK to use, and if none
# can be found, it will ask for the location of a JDK and store its location
# in this file. If a particular JDK should be used instead, uncomment the
# line below and set the path to your preferred JDK.
SetJavaHome C:\Program Files\Java\jdk1.7.0_65
# Specify the initial size, in bytes, of the memory allocation pool. This
# value must be a multiple of 1024 greater than 1MB. Append the letter k
# or K to indicate kilobytes, or m or M to indicate megabytes, or g or G
# to indicate gigabytes. The default value is chosen at runtime based on
# the system configuration.
# Examples:  -Xms6291456
#            -Xms6144k
#            -Xms6m
# You can specify one value for any JDK using AddVMOption, OR you can specify
# separate values for 32-bit and 64-bit JDK's.
AddVMOption -Xms128m
# Add32VMOption -Xms128m
# Add64VMOption -Xms128m
# Specify the maximum size, in bytes, of the memory allocation pool. This
# value must be a multiple of 1024 greater than 2MB. Append the letter k
# or K to indicate kilobytes, or m or M to indicate megabytes, or g or G
# to indicate gigabytes. The default value is chosen at runtime based on
# the system configuration.
# Examples:  -Xmx83886080
#            -Xmx81920k
#            -Xmx80m
# On Solaris 7 and Solaris 8 SPARC platforms, the upper limit for this value
# is approximately 4000m minus overhead amounts. On Solaris 2.6 and x86
# platforms, the upper limit is approximately 2000m minus overhead amounts.
# On Linux platforms, the upper limit is approximately 2000m minus overhead
# amounts.
# If you are getting the 'Low Memory Warning' Message Dialog while running
# the product, please increase the -Xmx value below from the default 800M to
# something greater, like 1024M or 1250M.  If after increasing the value,
# the product is no longer starting up because it fails to create a virtual
# machine, then please reduce the modified -Xmx value, or use a 64bit JDK
# which allows for very very large value for -Xmx.
# You can specify one value for any JDK using AddVMOption, OR you can specify
# separate values for 32-bit and 64-bit JDK's.
AddVMOption -Xmx800m
# Add32VMOption -Xmx800m
# Add64VMOption -Xmx800m
and i can navigate to this path .