ORA-46630: keystore cannot be created at the specified location

This error comes while creating a keystore at a location where there is already a keystore exists and you can see ewallet.p12 file already present there.

To solve the problem, use a different location to create a keystore (use ENCRYPTION_WALLET_LOCATION in sqlnet.ora file to specify the keystore location), or move this ewallet.p12 file to some other location.