Quarterly Schedule of Portfolio Holdings of Registered Management Investment Company (n-q)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-10445

Nuveen Ohio Dividend Advantage Municipal Fund 2

(Exact name of registrant as specified in charter)

Nuveen Investments

333 West Wacker Drive, Chicago, Illinois 60606

(Address of principal executive offices) (Zip code)

Kevin J. McCarthy

Vice President and Secretary

333 West Wacker Drive, Chicago, Illinois 60606

(Name and address of agent for service)

Registrant's telephone number, including area code: 312-917-7700

Date of fiscal year end: 2/28

Date of reporting period: 11/30/12

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments


	Portfolio of Investments (Unaudited)
	Nuveen Ohio Dividend Advantage Municipal Fund 2 (NBJ)
	November 30, 2012


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Consumer Staples – 5.8% (4.0% of Total Investments)
$ 400	Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue	No Opt. Call	A1	$ 447,728
	Bonds, Senior Lien, Series 2007A-1, 5.000%, 6/01/16
	Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue
	Bonds, Senior Lien, Series 2007A-2:
1,000	5.125%, 6/01/24	6/17 at 100.00	B	902,590
1,750	5.875%, 6/01/47	6/17 at 100.00	BB	1,560,948
45	Puerto Rico, The Children’s Trust Fund, Tobacco Settlement Asset-Backed Refunding Bonds,	5/13 at 100.00	BBB+	45,051
	Series 2002, 5.375%, 5/15/33
3,195	Total Consumer Staples			2,956,317
	Education and Civic Organizations – 6.9% (4.7% of Total Investments)
1,345	Bowling Green State University, Ohio, General Receipts Bonds, Series 2003, 5.250%,	6/13 at 100.00	A+	1,373,756
	6/01/18 – AMBAC Insured
490	Miami University of Ohio, General Receipts Bonds, Series 2011, 5.000%, 9/01/36	9/21 at 100.00	AA	580,038
250	Miami University of Ohio, General Receipts Bonds, Series 2012, 4.000%, 9/01/33	9/22 at 100.00	AA	276,678
450	Ohio Higher Education Facilities Commission, General Revenue Bonds, Kenyon College, Series	7/16 at 100.00	A+	475,740
	2006, 5.000%, 7/01/41
805	Ohio Higher Educational Facilities Commission, Revenue Bonds, Wittenberg University, Series	6/13 at 100.00	Ba2	805,829
	2001, 5.500%, 12/01/15
3,340	Total Education and Civic Organizations			3,512,041
	Health Care – 22.4% (15.4% of Total Investments)
250	Allen County, Ohio, Hospital Facilities Revenue Bonds, Catholic Healthcare Partners, Series	6/20 at 100.00	AA–	283,498
	2010A, 5.250%, 6/01/38
1,000	Butler County, Ohio, Hospital Facilities Revenue Bonds, UC Health, Series 2010, 5.500%, 11/01/40	11/20 at 100.00	BBB+	1,137,630
1,090	Butler County, Ohio, Hospital Facilities Revenue Bonds, Cincinnati Children’s Medical Center	5/16 at 100.00	N/R	1,141,535
	Project, Series 2006K, 5.000%, 5/15/31 – FGIC Insured
300	Franklin County, Ohio, Hospital Revenue Bonds, Nationwide Children’s Hospital Project,	11/19 at 100.00	Aa2	339,783
	Improvement Series 2009, 5.250%, 11/01/40
250	Franklin County, Ohio, Hospital Revenue Bonds, Nationwide Children’s Hospital Project, Series	11/18 at 100.00	Aa2	272,748
	2005, 5.000%, 11/01/40
480	Franklin County, Ohio, Hospital Revenue Bonds, OhioHealth Corporation, Tender Option Bond	11/21 at 100.00	AA+	607,661
	Trust 11-21B, 9.316%, 11/15/41 (IF) (4)
600	Hancock County, Ohio, Hospital Revenue Bonds, Blanchard Valley Regional Health Center, Series	6/21 at 100.00	A2	726,090
	2011A, 6.250%, 12/01/34
865	Lake County, Ohio, Hospital Facilities Revenue Bonds, Lake Hospital System, Inc., Refunding	8/18 at 100.00	A3	975,244
	Series 2008C, 6.000%, 8/15/43
460	Lucas County, Ohio, Hospital Revenue Bonds, ProMedica Healthcare Obligated Group, Series	11/21 at 100.00	AA–	571,992
	2011A, 6.000%, 11/15/41
225	Miami County, Ohio, Hospital Facilities Revenue Refunding Bonds, Upper Valley Medical Center	5/16 at 100.00	A2	247,311
	Inc., Series 2006, 5.250%, 5/15/21
120	Middleburg Heights, Ohio, Hospital Facilities Revenue Bonds, Southwest General Health Center	8/21 at 100.00	A2	135,055
	Project, Refunding Series 2011, 5.250%, 8/01/41
700	Montgomery County, Ohio, Revenue Bonds, Catholic Health Initiatives, Series 2004A,	5/14 at 100.00	AA–	730,100
	5.000%, 5/01/30
90	Montgomery County, Ohio, Revenue Bonds, Miami Valley Hospital, Series 2009A, 6.250%, 11/15/39	11/14 at 100.00	Aa3	98,015
35	Ohio State Higher Educational Facilities Commission, Hospital Revenue Bonds, Cleveland Clinic	1/18 at 100.00	Aa2	39,646
	Health System Obligated Group, Series 2008A, 5.000%, 1/01/25
	Ohio State Higher Educational Facilities Commission, Hospital Revenue Bonds, Summa Health
	System Project, Series 2010:
400	5.750%, 11/15/40 – AGM Insured	5/20 at 100.00	AA–	461,972
40	5.250%, 11/15/40 – AGM Insured	5/20 at 100.00	AA–	45,108
200	Ohio State, Hospital Facility Revenue Refunding Bonds, Cleveland Clinic Health System	1/19 at 100.00	Aa2	229,838
	Obligated Group, Series 2009A, 5.500%, 1/01/39
	Ohio State, Hospital Facility Revenue Refunding Bonds, Cleveland Clinic Health System
	Obligated Group, Tender Option Bond Trust 3551:
125	19.555%, 1/01/17 (IF)	No Opt. Call	Aa2	184,170
1,000	20.062%, 1/01/33 (IF)	1/19 at 100.00	Aa2	1,596,760
375	Ohio State, Hospital Facility Revenue Refunding Bonds, Cleveland Clinic Health System	No Opt. Call	Aa2	598,785
	Obligated Group, Tender Option Bond Trust 3591, 20.220%, 1/01/17 (IF)
350	Richland County, Ohio, Hospital Revenue Bonds, MidCentral Health System Group, Series 2006,	11/16 at 100.00	A–	373,051
	5.250%, 11/15/36
190	Ross County, Ohio, Hospital Revenue Refunding Bonds, Adena Health System Series 2008,	12/18 at 100.00	A2	216,883
	5.750%, 12/01/35
375	Wood County, Ohio, Hospital Facilities Refunding and Improvement Revenue Bonds, Wood County	12/22 at 100.00	Baa2	403,264
	Hospital Project, Series 2012, 5.000%, 12/01/37 (WI/DD, Settling 12/06/12)
9,520	Total Health Care			11,416,139
	Housing/Multifamily – 4.4% (3.0% of Total Investments)
1,000	Franklin County, Ohio, GNMA Collateralized Multifamily Housing Mortgage Revenue Bonds, Agler	5/13 at 101.00	Aaa	1,022,060
	Project, Series 2002A, 5.550%, 5/20/22 (Alternative Minimum Tax)
250	Montgomery County, Ohio, GNMA Guaranteed Multifamily Housing Revenue Bonds, Canterbury Court	10/18 at 101.00	Aa1	274,733
	Project, Series 2007, 5.500%, 10/20/42 (Alternative Minimum Tax)
205	Ohio Housing Finance Agency, FHA-Insured Multifamily Housing Mortgage Revenue Bonds, Madonna	6/16 at 102.00	Aaa	216,220
	Homes, Series 2006M, 4.900%, 6/20/48 (Alternative Minimum Tax)
690	Summit County Port Authority, Ohio, Multifamily Housing Revenue Bonds, Callis Tower Apartments	9/17 at 102.00	AA+	744,538
	Project, Series 2007, 5.250%, 9/20/47 (Alternative Minimum Tax)
2,145	Total Housing/Multifamily			2,257,551
	Housing/Single Family – 0.4% (0.3% of Total Investments)
180	Ohio Housing Finance Agency, Residential Mortgage Revenue Bonds, Mortgage-Backed Securities	9/15 at 100.00	Aaa	186,563
	Program, Series 2006H, 5.000%, 9/01/31 (Alternative Minimum Tax)
	Industrials – 2.7% (1.8% of Total Investments)
1,000	Toledo-Lucas County Port Authority, Ohio, Revenue Refunding Bonds, CSX Transportation Inc.,	No Opt. Call	Baa2	1,299,990
	Series 1992, 6.450%, 12/15/21
500	Western Reserve Port Authority, Ohio, Solid Waste Facility Revenue Bonds, Central Waste Inc.,	7/17 at 102.00	N/R	70,135
	Series 2007A, 6.350%, 7/01/27 (Alternative Minimum Tax) (5)
1,500	Total Industrials			1,370,125
	Long-Term Care – 1.0% (0.7% of Total Investments)
95	Franklin County, Ohio, Healthcare Facilities Revenue Bonds, Ohio Presbyterian Retirement	7/21 at 100.00	BBB	108,481
	Services, Improvement Series 2010A, 5.625%, 7/01/26
340	Montgomery County, Ohio, Health Care and Multifamily Housing Revenue Bonds, Saint Leonard,	4/20 at 100.00	BBB-	390,065
	Refunding & improvement Series 2010, 6.625%, 4/01/40
435	Total Long-Term Care			498,546
	Tax Obligation/General – 47.3% (32.6% of Total Investments)
1,000	Central Ohio Solid Waste Authority, General Obligation Bonds, Refunding & Improvements, Series	6/22 at 100.00	AAA	1,238,440
	2012, 5.000%, 12/01/29 – AGM Insured
	Cleveland Municipal School District, Cuyahoga County, Ohio, General Obligation Bonds,
	Series 2004:
1,000	5.000%, 12/01/15 – AGM Insured	6/14 at 100.00	AA	1,064,530
1,000	5.000%, 12/01/22 – AGM Insured	6/14 at 100.00	AA	1,066,130
1,000	Cleveland, Ohio, General Obligation Bonds, Series 2011, 5.000%, 12/01/29	12/19 at 100.00	AA	1,146,200
1,140	Columbia Local School District, Lorain County, Ohio, General Obligation Bonds, School	11/21 at 100.00	Aa3	1,341,142
	Facilities Improvement Series 2011, 5.000%, 11/01/39 – AGM Insured
	Columbus City School District, Franklin County, Ohio, General Obligation Bonds, Series 2006:
2,095	0.000%, 12/01/27 – AGM Insured	No Opt. Call	AA+	1,302,126
100	0.000%, 12/01/28 – AGM Insured	No Opt. Call	AA+	59,368
400	Cuyahoga County, Ohio, General Obligation Bonds, Series 2004, 5.000%, 12/01/21	12/14 at 100.00	AA+	434,912
1,000	Franklin County, Ohio, General Obligation Bonds, Series 2007, 5.000%, 12/01/27	12/17 at 100.00	AAA	1,178,380
400	Green, Ohio, General Obligation Bonds, Series 2008, 5.500%, 12/01/32	12/15 at 100.00	AA+	442,640
1,905	Hamilton City School District, Ohio, General Obligation Bonds, Series 2007, 5.000%,	6/17 at 100.00	AA–	2,133,427
	12/01/34 – AGM Insured
1,000	Indian Lake Local School District, Logan and Auglaize Counties, Ohio, School Facilities	6/17 at 100.00	Aa3	1,128,750
	Improvement and Refunding Bonds, Series 2007, 5.000%, 12/01/34 – NPFG Insured
500	Kenston Local School District, Geauga County, Ohio, General Obligation Bonds, Series 2011,	No Opt. Call	Aa1	414,755
	0.000%, 12/01/21
345	Lakewood City School District, Cuyahoga County, Ohio, General Obligation Bonds, Series 2007,	12/17 at 100.00	Aa2	394,728
	5.000%, 12/01/30 – FGIC Insured
400	Lucas County, Ohio, General Obligation Bonds, Various Purpose Series 2010, 5.000%, 10/01/40	10/18 at 100.00	Aa2	452,076
1,005	Marysville Exempted School District, Union County, Ohio, General Obligation Bonds, Series	12/15 at 100.00	AA–	1,119,791
	2006, 5.000%, 12/01/25 – AGM Insured
200	Mason City School District, Counties of Warren and Butler, Ohio, General Obligation Bonds,	6/17 at 100.00	Aaa	229,278
	Series 2007, 5.000%, 12/01/31
1,500	Middletown City School District, Butler County, Ohio, General Obligation Bonds, Refunding	No Opt. Call	Aa3	2,000,413
	Series 2007, 5.250%, 12/01/31 – AGM Insured
50	Milford Exempted Village School District, Ohio, General Obligation Bonds, Series 2008,	12/18 at 100.00	Aa3	57,389
	5.250%, 12/01/36
600	Monroe Local School District, Butler County, Ohio, General Obligation Bonds, Series 2006,	No Opt. Call	A2	762,912
	5.500%, 12/01/24 – AMBAC Insured
150	Napoleon City School District, Henry County, Ohio, General Obligation Bonds, Facilities	6/22 at 100.00	Aa3	174,578
	Construction & Improvement Series 2012, 5.000%, 12/01/36
2,665	Newark City School District, Licking County, Ohio, General Obligation Bonds, Series 2005,	12/15 at 100.00	Aa3	2,939,120
	5.000%, 12/01/28 – FGIC Insured
400	Northmor Local School District, Morrow County, Ohio, General Obligation School Facilities	11/18 at 100.00	Aa2	452,488
	Construction and Improvement Bonds, Series 2008, 5.000%, 11/01/36
1,000	South Euclid, Ohio, General Obligation Bonds, Real Estate Acquisition and Urban Redevelopment,	6/22 at 100.00	Aa2	1,168,360
	Series 2012, 5.000%, 6/01/42
1,000	South-Western City School District, Franklin and Pickaway Counties, Ohio, General Obligation	6/22 at 100.00		1,193,030
	Bonds, School Facilities Construction & Improvement Series 2012, 5.000%, 12/01/36
50	Sylvania City School District, Lucas County, Ohio, General Obligation Bonds, School	6/17 at 100.00	Aa2	57,136
	Improvement Series 1995, 5.250%, 12/01/36 – AGC Insured
200	Vandalia Butler City School District, Montgomery County, Ohio, General Obligation Bonds,	6/19 at 100.00	AA	226,910
	School Improvment Series 2009, 5.125%, 12/01/37
22,105	Total Tax Obligation/General			24,179,009
	Tax Obligation/Limited – 26.1% (18.0% of Total Investments)
500	Cuyhoga County, Ohio, Recovery Zone Facility Economic Development Revenue Bonds, Medical	12/20 at 100.00	AA	589,160
	Mart- Convention Center Project, Series 2010F, 5.000%, 12/01/27
175	Delaware County District Library, Delaware, Franklin, Marion, Morrow and Union Counties, Ohio,	12/19 at 100.00	Aa2	201,793
	Library Fund Library Facilities Special Obligation Notes, Series 2009, 5.000%, 12/01/34
395	Government of Guam, Business Privilege Tax Bonds, Series 2011A, 5.125%, 1/01/42	1/22 at 100.00	A	451,683
160	Government of Guam, Business Privilege Tax Bonds, Series 2012B-1, 5.000%, 1/01/42	1/22 at 100.00	A	181,400
760	Greater Cleveland Regional Transit Authority, Ohio, Sales Tax Supported Capital Improvement	12/21 at 100.00	AAA	937,551
	Bonds, Refunding Series 2012, 5.250%, 12/01/30
1,000	Hamilton County, Ohio, Sales Tax Bonds, Subordinate Lien, Series 2006A, 5.000%,	12/16 at 100.00	A+	1,114,730
	12/01/32 – AMBAC Insured
2,500	Hamilton County, Ohio, Sales Tax Bonds, Subordinate Series 2000B, 0.000%,	No Opt. Call	AA–	1,371,975
	12/01/28 – AGM Insured
1,000	Hamilton County, Ohio, Sales Tax Revenue Bonds, Refunding Series 2011A, 5.000%, 12/01/31	12/21 at 100.00	A+	1,158,050
1,750	Hudson City School District, Ohio, Certificates of Participation, Series 2012, 4.000%,	6/22 at 100.00	Aa3	1,854,946
	6/01/34 – NPFG Insured
140	New Albany Community Authority, Ohio, Community Facilities Revenue Refunding Bonds,	10/22 at 100.00	A1	169,330
	Series 2012C, 5.000%, 10/01/24
250	Ohio State Building Authority, State Facilities Bonds, Administrative Building Fund Projects,	4/15 at 100.00	AA	275,190
	Series 2005A, 5.000%, 4/01/25 – AGM Insured
1,000	Ohio State Building Authority, State Facilities Bonds, Adult Correctional Building Fund	4/15 at 100.00	AA	1,101,740
	Project, Series 2005A, 5.000%, 4/01/23 – AGM Insured
4,065	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, First Subordinate Series	No Opt. Call	A+	1,294,215
	2009A, 0.000%, 8/01/34
3,940	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, First Subordinate Series	No Opt. Call	A+	1,165,964
	2010A, 0.000%, 8/01/35
400	Riversouth Authority, Ohio, Riversouth Area Redevelopment Bonds, Refunding Series 2012A,	12/22 at 100.00	AA+	493,520
	5.000%, 12/01/24
805	Vermilion Local School District, East and Lorain Counties, Ohio, Certificates of	12/20 at 100.00	Aa3	948,958
	Participation, Series 2012, 5.000%, 12/01/25 (WI/DD, Settling 12/12/12)
18,840	Total Tax Obligation/Limited			13,310,205
	Transportation – 1.1% (0.8% of Total Investments)
500	Cleveland, Ohio, Airport System Revenue Bonds, Series 2012A, 5.000%, 1/01/31 – AGM Insured	1/22 at 100.00	AA–	584,420
	U.S. Guaranteed – 13.3% (9.2% of Total Investments) (6)
605	Columbus City School District, Franklin County, Ohio, General Obligation Bonds, Series 2004,	12/14 at 100.00	AA+ (6)	666,898
	5.500%, 12/01/15 (Pre-refunded 12/01/14) – AGM Insured
1,000	Marysville Exempted Village School District, Ohio, Certificates of Participation, School	6/15 at 100.00	N/R (6)	1,121,140
	Facilities Project, Series 2005, 5.250%, 12/01/21 (Pre-refunded 6/01/15) – NPFG Insured
100	Ohio State Higher Educational Facilities Commission, Hospital Revenue Bonds, University	1/15 at 100.00	A (6)	113,315
	Hospitals Health System, Series 2009, 6.750%, 1/15/39 (Pre-refunded 1/15/15)
210	Ohio Water Development Authority, Revenue Bonds, Drinking Water Assistance Fund, State Match,	6/18 at 100.00	AAA	257,542
	Series 2008, 5.000%, 6/01/28 (Pre-refunded 6/01/18) – AGM Insured
1,095	Ohio, State Appropriation Lease Bonds, Parks and Recreation Capital Facilities, Series	12/13 at 100.00	AA (6)	1,147,078
	2004A-II, 5.000%, 12/01/18 (Pre-refunded 12/01/13)
1,050	Olentangy Local School District, Delaware and Franklin Counties, Ohio, General Obligation	6/14 at 100.00	AA+ (6)	1,131,260
	Bonds, Series 2004A, 5.500%, 12/01/15 (Pre-refunded 6/01/14) – FGIC Insured
1,000	University of Cincinnati, Ohio, General Receipts Bonds, Series 2003C, 5.000%, 6/01/22	6/13 at 100.00	AA– (6)	1,024,120
	(Pre-refunded 6/01/13) – FGIC Insured
1,245	University of Cincinnati, Ohio, General Receipts Bonds, Series 2004D, 5.000%, 6/01/19	6/14 at 100.00	AA- (6)	1,332,026
	(Pre-refunded 6/01/14) – AMBAC Insured
6,305	Total U.S. Guaranteed			6,793,379
	Utilities – 9.2% (6.4% of Total Investments)
1,000	American Municipal Power Ohio Inc., General Revenue Bonds, Prairie State Energy Campus Project	2/18 at 100.00	A1	1,135,260
	Series 2008A, 5.250%, 2/15/43
1,065	Cleveland, Ohio, Public Power System Revenue Bonds, Series 2008B, 0.000%, 11/15/32 –	No Opt. Call	A2	460,527
	NPFG Insured
2,500	Ohio Air Quality Development Authority, Revenue Refunding Bonds, Ohio Power Company Project,	5/13 at 100.00	Baa1	2,504,123
	Series 1999C, 5.150%, 5/01/26 – AMBAC Insured
595	Ohio Municipal Electric Generation Agency, Beneficial Interest Certificates, Belleville	2/14 at 100.00	A1	626,440
	Hydroelectric Project – Joint Venture 5, Series 2004, 5.000%, 2/15/20 – AMBAC Insured
5,160	Total Utilities			4,726,350
	Water and Sewer – 4.5% (3.1% of Total Investments)
1,100	Cincinnati, Ohio, Water System Revenue Bonds, Series 2012A, 5.000%, 12/01/37	12/21 at 100.00	AAA	1,317,030
130	City of Marysville, Ohio, Water System Mortgage Revenue Bonds, Series 2007, 5.000%, 12/01/32 –	12/17 at 100.00	A1	148,738
	AMBAC Insured
625	Cleveland, Ohio, Water Revenue Bonds, Second Lien Series 2012A, 5.000%, 1/01/25	1/22 at 100.00	Aa2	776,838
50	Ironton, Ohio, Sewer System Improvement Revenue Bonds, Series 2011, 5.250%, 12/01/40 –	12/20 at 100.00	Aa3	58,164
	AGM Insured
1,905	Total Water and Sewer			2,300,770
$ 75,130	Total Investments (cost $66,291,748) – 145.1%			74,091,415
	MuniFund Term Preferred Shares, at Liquidation Value – (47.5)% (7)			(24,244,000)
	Other Assets Less Liabilities – 2.4%			1,216,080
	Net Assets Applicable to Common Shares – 100%			$ 51,063,495

Fair Value Measurements

Fair value is defined as the price that the Funds would receive upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. A three-tier hierarchy is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.

Level 1 – Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.

Level 2 – Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).

Level 3 – Prices are determined using significant unobservable inputs (including management’s assumptions in determining the fair value of investments).

The inputs or methodologies used for valuing securities are not an indication of the risks associated with investing in those securities. The following is a summary of the Fund’s fair value measurements as of the end of the reporting period:

	Level 1	Level 2	Level 3	Total
Long-Term Investments*:
Municipal Bonds	$ —	$74,091,415	$ —	$74,091,415

* Refer to the Fund’s Portfolio of Investments for industry classifications.

The Nuveen funds’ Board of Directors/Trustees is responsible for the valuation process and has delegated the oversight of the daily valuation process to the Adviser’s Valuation Committee. The Valuation Committee, pursuant to the valuation policies and procedures adopted by the Board of Directors/Trustees, is responsible for making fair value determinations, evaluating the effectiveness of the funds’ pricing policies, and reporting to the Board of Directors/Trustees. The Valuation Committee is aided in its efforts by the Adviser’s dedicated Securities Valuation Team, which is responsible for administering the daily valuation process and applying fair value methodologies as approved by the Valuation Committee. When determining the reliability of independent pricing services for investments owned by the funds, the Valuation Committee, among other things, conducts due diligence reviews of the pricing services and monitors the quality of security prices received through various testing reports conducted by the Securities Valuation Team.

The Valuation Committee will consider pricing methodologies it deems relevant and appropriate when making fair value determinations. Examples of possible methodologies include, but are not limited to, multiple of earnings; discount from market of a similar freely traded security; discounted cash-flow analysis; book value or a multiple thereof; risk premium/yield analysis; yield to maturity; and/or fundamental investment analysis. The Valuation Committee will also consider factors it deems relevant and appropriate in light of the facts and circumstances. Examples of possible factors include, but are not limited to, the type of security; the issuer’s financial statements; the purchase price of the security; the discount from market value of unrestricted securities of the same class at the time of purchase; analysts’ research and observations from financial institutions; information regarding any transactions or offers with respect to the security; the existence of merger proposals or tender offers affecting the security; the price and extent of public trading in similar securities of the issuer or comparable companies; and the existence of a shelf registration for restricted securities.

For each portfolio security that has been fair valued pursuant to the policies adopted by the Board of Directors/ Trustees, the fair value price is compared against the last available and next available market quotations. The Valuation Committee reviews the results of such testing and fair valuation occurrences are reported to the Board of Directors/Trustees.

Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate securities reflected as financing transactions, if any. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.

At November 30, 2012, the cost of investments was $66,244,075.

Gross unrealized appreciation and gross unrealized depreciation of investments at November 30, 2012, were as follows:


Gross unrealized:
Appreciation	$8,219,507
Depreciation	(372,167)
Net unrealized appreciation (depreciation) of investments	$7,847,340

(1)		All percentages shown in the Portfolio of Investments are based on net assets applicable to Common shares
		unless otherwise noted.
(2)		Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There
		may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be subject
		to periodic principal paydowns.

(3)		Ratings: Using the highest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc.
		(“Moody’s”) or Fitch, Inc. (“Fitch”) rating. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or BBB
		by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any of these
		national rating agencies.
(4)		Investment, or portion of investment, has been pledged to collateralize the net payment obligations for
		investments in inverse floating rate transactions.
(5)		At or subsequent to the end of the reporting period, this security is non-income producing. Non-income
		producing security, in the case of a bond, generally denotes that the issuer has (1) defaulted on the payment
		of principal or interest, (2) is under the protection of the Federal Bankruptcy Court or (3) the Fund’s Adviser
		has concluded that the issue is not likely to meet its future interest payment obligations and has directed
		the Fund’s custodian to cease accruing additional income on the Fund’s records.
(6)		Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities,
		which ensure the timely payment of principal and interest. Certain bonds backed by U.S. Government or
		agency securities are regarded as having an implied rating equal to the rating of such securities.
(7)		MuniFund Term Preferred Shares, at Liquidation Value as a percentage of Total Investments is 32.7%.
N/R		Not rated.
WI/DD		Investment, or portion of investment, purchased on a when-issued or delayed delivery basis.
(IF)		Inverse floating rate investment.

Item 2. Controls and Procedures.

The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).

There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) Nuveen Ohio Dividend Advantage Municipal Fund 2

By (Signature and Title) /s/ Kevin J. McCarthy

Kevin J. McCarthy

Vice President and Secretary

Date: January 29, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title) /s/ Gifford R. Zimmerman

Gifford R. Zimmerman

Chief Administrative Officer (principal executive officer)

Date: January 29, 2013

By (Signature and Title) /s/ Stephen D. Foy

Stephen D. Foy

Vice President and Controller (principal financial officer)

Date: January 29, 2013

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