The amount of disk space available in the TEMP directory is equivalent to the total amount of free disk space, minus what is needed to install the Oracle software.
Note:
The temporary directory must reside in the same directory path on each node in the cluster.You must have 1 GB of disk space available in the TEMP directory. If you do not have sufficient space, then first delete all unnecessary files. If the temporary disk space is still less than the required amount, then increase the partition size of the disk or set the TEMP environment variable to point to a different hard drive. Ensure the environment variables TEMP and TMP both point to the location of the TEMP directory, for example:
TEMP=C:\WINDOWS\TEMP TMP=C:\WINDOWS\TEMP
TEMP environment variable in the user variables list.