SAP installation problem Create/check tablespaces

When i'm installing the sap i get an error as:😔

An error occurred while processing option Enhancement Package 4 for SAP ERP 6.0 > SAP Application Server ABAP > Oracle > Central System > Central System( Last error reported by the step :Caught ESAPinstException in Modulecall: E:/ | 305855 | 285217 | 1,2 .). You can now:

• Choose Retry to repeat the current step.
• Choose View Log to get more information about the error.
• Stop the option and continue with it later.

Log files are written to C:\Program Files/sapinst_instdir/ERPEhP4/AS-ABAP/ORA/CENTRAL/.

and the installation log shows as

TRACE 2012-03-30 16:17:56.138

Using custom value info for property SAPINST_MESSAGE_CONSOLE_THRESHOLD.

can any one please help me to find the solution for the installation...

Thanks in advance

Phani kumar