<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by RR Donnelley IM Processor 4.0.0.0 using Fujitsu Interstage XWand-->
<schema targetNamespace="http://www.fidelity.com/20120927" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:fsst2="http://www.fidelity.com/20120927" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric">
  <annotation>
    <appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="fsst2-20120927_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fsst2-20120927_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fsst2-20120927_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fsst2-20120927_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentDocumentandEntityInformation" id="DocumentDocumentandEntityInformation">
        <link:definition>000000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityCommodityStrategyFund" id="DocumentRiskReturnSummaryUnlabeledFidelityCommodityStrategyFund">
        <link:definition>000011 - Document - Risk/Return Summary {Unlabeled} - Fidelity Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelityCommodityStrategyFund" id="ScheduleShareholderFeesFidelityCommodityStrategyFund">
        <link:definition>000012 - Schedule - Shareholder Fees {- Fidelity Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualFundOperatingExpensesFidelityCommodityStrategyFund" id="ScheduleAnnualFundOperatingExpensesFidelityCommodityStrategyFund">
        <link:definition>000013 - Schedule - Annual Fund Operating Expenses {- Fidelity Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelityCommodityStrategyFund" id="ScheduleExpenseExampleFidelityCommodityStrategyFund">
        <link:definition>000014 - Schedule - Expense Example {- Fidelity Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelityCommodityStrategyFund" id="ScheduleExpenseExampleNoRedemptionTransposedFidelityCommodityStrategyFund">
        <link:definition>000015 - Schedule - Expense Example, No Redemption {Transposed} - Fidelity Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityCommodityStrategyFundBarChart" id="ScheduleAnnualTotalReturnsFidelityCommodityStrategyFundBarChart">
        <link:definition>000016 - Schedule - Annual Total Returns - Fidelity Commodity Strategy Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityCommodityStrategyFund" id="ScheduleAverageAnnualTotalReturnsTransposedFidelityCommodityStrategyFund">
        <link:definition>000017 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelityCommodityStrategyFund" id="DocumentRiskReturnDetailUnlabeledFidelityCommodityStrategyFund">
        <link:definition>000018 - Document - Risk/Return Detail {Unlabeled} - Fidelity Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityCommodityStrategyFund" id="DisclosureRiskReturnDetailDataElementsFidelityCommodityStrategyFund">
        <link:definition>000019 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelitySeriesCommodityStrategyFund" id="DocumentRiskReturnSummaryUnlabeledFidelitySeriesCommodityStrategyFund">
        <link:definition>000021 - Document - Risk/Return Summary {Unlabeled} - Fidelity Series Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelitySeriesCommodityStrategyFund" id="ScheduleShareholderFeesFidelitySeriesCommodityStrategyFund">
        <link:definition>000022 - Schedule - Shareholder Fees{ - Fidelity Series Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelitySeriesCommodityStrategyFund" id="ScheduleAnnualClassOperatingExpensesFidelitySeriesCommodityStrategyFund">
        <link:definition>000023 - Schedule - Annual Class Operating Expenses {- Fidelity Series Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelitySeriesCommodityStrategyFund" id="ScheduleExpenseExampleFidelitySeriesCommodityStrategyFund">
        <link:definition>000024 - Schedule - Expense Example{  - Fidelity Series Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesCommodityStrategyFund" id="ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesCommodityStrategyFund">
        <link:definition>000025 - Schedule - Expense Example, No Redemption {Transposed} - Fidelity Series Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelitySeriesCommodityStrategyFundBarChart" id="ScheduleAnnualTotalReturnsFidelitySeriesCommodityStrategyFundBarChart">
        <link:definition>000026 - Schedule - Annual Total Returns - Fidelity Series Commodity Strategy Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesCommodityStrategyFund" id="ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesCommodityStrategyFund">
        <link:definition>000027 - Schedule - Average Annual Total Returns {Transposed}{ - Fidelity Series Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelitySeriesCommodityStrategyFund" id="DocumentRiskReturnDetailUnlabeledFidelitySeriesCommodityStrategyFund">
        <link:definition>000028 - Document - Risk/Return Detail {Unlabeled} - Fidelity Series Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelitySeriesCommodityStrategyFund" id="DisclosureRiskReturnDetailDataElementsFidelitySeriesCommodityStrategyFund">
        <link:definition>000029 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Series Commodity Strategy Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelitySeriesCommodityStrategyFundClassF" id="DocumentRiskReturnSummaryUnlabeledFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000031 - Document - Risk/Return Summary {Unlabeled} - Fidelity Series Commodity Strategy Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelitySeriesCommodityStrategyFundClassF" id="ScheduleShareholderFeesFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000032 - Schedule - Shareholder Fees{ - Fidelity Series Commodity Strategy Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelitySeriesCommodityStrategyFundClassF" id="ScheduleAnnualClassOperatingExpensesFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000033 - Schedule - Annual Class Operating Expenses{ - Fidelity Series Commodity Strategy Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelitySeriesCommodityStrategyFundClassF" id="ScheduleExpenseExampleFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000034 - Schedule - Expense Example{ - Fidelity Series Commodity Strategy Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesCommodityStrategyFundClassF" id="ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000035 - Schedule - Expense Example, No Redemption {Transposed} - Fidelity Series Commodity Strategy Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelitySeriesCommodityStrategyFundClassFBarChart" id="ScheduleAnnualTotalReturnsFidelitySeriesCommodityStrategyFundClassFBarChart">
        <link:definition>000036 - Schedule - Annual Total Returns - Fidelity Series Commodity Strategy Fund Class F [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesCommodityStrategyFundClassF" id="ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000037 - Schedule - Average Annual Total Returns {Transposed}{ - Fidelity Series Commodity Strategy Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelitySeriesCommodityStrategyFundClassF" id="DocumentRiskReturnDetailUnlabeledFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000038 - Document - Risk/Return Detail {Unlabeled} - Fidelity Series Commodity Strategy Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelitySeriesCommodityStrategyFundClassF" id="DisclosureRiskReturnDetailDataElementsFidelitySeriesCommodityStrategyFundClassF">
        <link:definition>000039 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Series Commodity Strategy Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledSpartanRealEstateIndexFund" id="DocumentRiskReturnSummaryUnlabeledSpartanRealEstateIndexFund">
        <link:definition>000041 - Document - Risk/Return Summary {Unlabeled} - Spartan Real Estate Index Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesSpartanRealEstateIndexFund" id="ScheduleShareholderFeesSpartanRealEstateIndexFund">
        <link:definition>000042 - Schedule - Shareholder Fees{ - Spartan Real Estate Index Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesSpartanRealEstateIndexFund" id="ScheduleAnnualClassOperatingExpensesSpartanRealEstateIndexFund">
        <link:definition>000043 - Schedule - Annual Class Operating Expenses{ - Spartan Real Estate Index Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleSpartanRealEstateIndexFund" id="ScheduleExpenseExampleSpartanRealEstateIndexFund">
        <link:definition>000044 - Schedule - Expense Example{ - Spartan Real Estate Index Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedSpartanRealEstateIndexFund" id="ScheduleExpenseExampleNoRedemptionTransposedSpartanRealEstateIndexFund">
        <link:definition>000045 - Schedule - Expense Example, No Redemption {Transposed} - Spartan Real Estate Index Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsSpartanRealEstateIndexFundBarChart" id="ScheduleAnnualTotalReturnsSpartanRealEstateIndexFundBarChart">
        <link:definition>000046 - Schedule - Annual Total Returns - Spartan Real Estate Index Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedSpartanRealEstateIndexFund" id="ScheduleAverageAnnualTotalReturnsTransposedSpartanRealEstateIndexFund">
        <link:definition>000047 - Schedule - Average Annual Total Returns {Transposed}{ - Spartan Real Estate Index Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledSpartanRealEstateIndexFund" id="DocumentRiskReturnDetailUnlabeledSpartanRealEstateIndexFund">
        <link:definition>000048 - Document - Risk/Return Detail {Unlabeled} - Spartan Real Estate Index Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsSpartanRealEstateIndexFund" id="DisclosureRiskReturnDetailDataElementsSpartanRealEstateIndexFund">
        <link:definition>000049 - Disclosure - Risk/Return Detail Data {Elements} - Spartan Real Estate Index Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledSpartanRealEstateIndexFundClassInstitutional" id="DocumentRiskReturnSummaryUnlabeledSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000051 - Document - Risk/Return Summary {Unlabeled} - Spartan Real Estate Index Fund Class Institutional</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesSpartanRealEstateIndexFundClassInstitutional" id="ScheduleShareholderFeesSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000052 - Schedule - Shareholder Fees{ - Spartan Real Estate Index Fund Class Institutional}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesSpartanRealEstateIndexFundClassInstitutional" id="ScheduleAnnualClassOperatingExpensesSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000053 - Schedule - Annual Class Operating Expenses{ - Spartan Real Estate Index Fund Class Institutional}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleSpartanRealEstateIndexFundClassInstitutional" id="ScheduleExpenseExampleSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000054 - Schedule - Expense Example{  - Spartan Real Estate Index Fund Class Institutional}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedSpartanRealEstateIndexFundClassInstitutional" id="ScheduleExpenseExampleNoRedemptionTransposedSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000055 - Schedule - Expense Example, No Redemption {Transposed} - Spartan Real Estate Index Fund Class Institutional</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsSpartanRealEstateIndexFundClassInstitutionalBarChart" id="ScheduleAnnualTotalReturnsSpartanRealEstateIndexFundClassInstitutionalBarChart">
        <link:definition>000056 - Schedule - Annual Total Returns - Spartan Real Estate Index Fund Class Institutional [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedSpartanRealEstateIndexFundClassInstitutional" id="ScheduleAverageAnnualTotalReturnsTransposedSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000057 - Schedule - Average Annual Total Returns {Transposed}{ - Spartan Real Estate Index Fund Class Institutional}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledSpartanRealEstateIndexFundClassInstitutional" id="DocumentRiskReturnDetailUnlabeledSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000058 - Document - Risk/Return Detail {Unlabeled} - Spartan Real Estate Index Fund Class Institutional</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsSpartanRealEstateIndexFundClassInstitutional" id="DisclosureRiskReturnDetailDataElementsSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000059 - Disclosure - Risk/Return Detail Data {Elements} - Spartan Real Estate Index Fund Class Institutional</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualFundOperatingExpensesFidelitySeriesCommodityStrategyFund" id="ScheduleAnnualFundOperatingExpensesFidelitySeriesCommodityStrategyFund">
        <link:definition>000023 - Schedule - Annual Fund Operating Expenses {- Fidelity Series Commodity Strategy Fund}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualFundOperatingExpensesSpartanRealEstateIndexFundClassInstitutional" id="ScheduleAnnualFundOperatingExpensesSpartanRealEstateIndexFundClassInstitutional">
        <link:definition>000053 - Schedule - Annual Fund Operating Expenses - {Spartan Real Estate Index Fund Class Institutional}</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualFundOperatingExpensesSpartanRealEstateIndexFund" id="ScheduleAnnualFundOperatingExpensesSpartanRealEstateIndexFund">
        <link:definition>000043 - Schedule - Annual Fund Operating Expenses - Spartan Real Estate Index Fund</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <element name="S000026420Member" id="fsst2_S000026420Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000079289Member" id="fsst2_C000079289Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="ReturnBeforeTaxesMember" id="fsst2_ReturnBeforeTaxesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="DowJonesUbsCommodityIndexTotalReturnMember" id="fsst2_DowJonesUbsCommodityIndexTotalReturnMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="SeriesMember" id="fsst2_SeriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000026421Member" id="fsst2_S000026421Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000079290Member" id="fsst2_C000079290Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="ClassFMember" id="fsst2_ClassFMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000079291Member" id="fsst2_C000079291Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="InvestorClassMember" id="fsst2_InvestorClassMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000033639Member" id="fsst2_S000033639Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000103376Member" id="fsst2_C000103376Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000103378Member" id="fsst2_C000103378Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="InstitutionalClassMember" id="fsst2_InstitutionalClassMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000103377Member" id="fsst2_C000103377Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
</schema>
