Microsoft KB Archive/900335

= FIX: The SQL Server 2000 automatic database recovery operation may not succeed if an index contains a FLOAT data type or a REAL data type, and this data type contains a NaN value =

Article ID: 900335

Article Last Modified on 11/2/2007

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APPLIES TO


 * Microsoft SQL Server 2000 Enterprise Edition 64-bit
 * Microsoft SQL Server 2000 Desktop Engine (Windows)
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Personal Edition
 * Microsoft SQL Server 2000 Standard Edition
 * Microsoft SQL Server 2000 Workgroup Edition
 * Microsoft SQL Server 2000 Developer Edition

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''Microsoft distributes SQL Server 2000 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2000 fix release.''



SUMMARY
This article describes the following about this hotfix release:
 * The issues that are fixed by the hotfix package
 * The prerequisites for applying the hotfix package
 * Whether you must restart the computer after you apply the hotfix package
 * Whether the hotfix package is replaced by any other hotfix package
 * Whether you must make any registry changes after you apply the hotfix package
 * The files that are contained in the hotfix package



SYMPTOMS
When you start Microsoft SQL Server 2000, the SQL Server 2000 automatic database recovery mechanism verifies the consistency of each database.

If an index contains a FLOAT data type or a REAL data type, and this data type contains a not-a-number (NaN) value, the SQL Server 2000 automatic database recovery operation may not succeed. In this situation, the database becomes unavailable for user access.



RESOLUTION
For a list of all publicly released SQL Server 2000 Post-Service Pack 3a hotfixes, see the following article in the Microsoft Knowledge Base:

810185 SQL Server 2000 hotfix update for SQL Server 2000 Service Pack 3 and 3a

Note This hotfix is available for SQL Server 2000 Service Pack 3 and for SQL Server 2000 Service Pack 4.

Note The hotfix prevents insertion and update of a real type column or of a float type column that is indexed and that contains a NaN value. The hotfix will not fix the problem if you have already experienced it. In this case, the hotfix does not work because it is not possible to sort all NaN values.

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft SQL Server 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

 * Microsoft SQL Server 2000 Service Pack 3 (SP3) version of this hotfix requires SP3 and baseline hotfix 8.00.1007.
 * Microsoft SQL Server 2000 Service Pack 4 (SP4) version of this hotfix requires SP4.

For more information about how to obtain SQL Server 2000 Service Pack 3 and SQL Server 2000 Service Pack 4, click the following article number to view the article in the Microsoft Knowledge Base:

290211 How to obtain the latest SQL Server 2000 service pack

Restart information
You do not have to restart the computer after you apply this hotfix.

Registry information
You do not have to make any registry changes after you apply this hotfix.

Hotfix file information
This hotfix contains only those files that are required to correct the problem that this article discusses. This hotfix may not contain of all the files that you must have to fully update a product to the latest build.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

SQL Server 2000 Service Pack 3 32-bit versions
  Date         Time   Version            Size    File name --  15-Apr-2005  01:07  6.1.9.0            15,872  Spupdsvc.exe 31-May-2005 22:58                      3,842  Tempcatsign.cdf 31-May-2005 22:41  2000.80.1027.0    664,128  Autoplt.dll 31-May-2005 22:41  2000.80.1027.0     78,400  Console.exe 31-May-2005 22:41  2000.80.1027.0    332,352  Ctasksui.dll 31-May-2005 22:41  2000.80.1027.0    315,968  Custtask.dll 31-May-2005 22:41  2000.80.1027.0     33,340  Dbmslpcn.dll 15-Apr-2005 01:17                    786,432  Distmdl.ldf 15-Apr-2005 01:17                  2,359,296  Distmdl.mdf 15-Apr-2005 01:17                        180  Drop_repl_hotfix.sql 31-May-2005 22:41  2000.80.1027.0  1,905,216  Dtspkg.dll 31-May-2005 22:41  2000.80.1027.0    528,960  Dtspump.dll 31-May-2005 22:41  2000.80.1027.0  1,557,052  Dtsui.dll 31-May-2005 22:41  2000.80.1027.0    639,552  Dtswiz.dll 31-May-2005 22:41  2000.80.1027.0    102,992  Impprov.dll 15-Apr-2005 01:17                    747,927  Instdist.sql 15-Apr-2005 01:17                      1,581  Inst_repl_hotfix.sql 31-May-2005 22:41  2000.80.1027.0    352,828  Isqlw.exe 31-May-2005 22:41  2000.80.1027.0     82,492  Itwiz.exe 31-May-2005 22:41  2000.80.1027.0     90,692  Msgprox.dll 15-Apr-2005 00:59  8.11.41022.0      226,304  Mssdi98.dll 31-May-2005 22:41  2000.80.1027.0     62,024  Odsole70.dll 31-May-2005 22:42  2000.80.1027.0     25,144  Opends60.dll 31-May-2005 22:41  2000.80.1027.0     57,904  Osql.exe 31-May-2005 22:41  2000.80.1027.0    279,104  Pfutil80.dll 15-Apr-2005 01:13                    551,012  Procsyst.sql 15-Apr-2005 01:17                     12,305  Qfe469315.sql 15-Apr-2005 01:17                     19,195  Qfe469571.sql 15-Apr-2005 01:17                      5,157  Qfe472197.sql 31-May-2005 22:41  2000.80.1027.0    143,940  Qrdrsvc.exe 31-May-2005 21:38                  1,136,160  Replmerg.sql 31-May-2005 22:41  2000.80.1027.0    221,768  Replprov.dll 31-May-2005 22:41  2000.80.1027.0    307,784  Replrec.dll 31-May-2005 21:40  2000.80.1027.0    159,813  Replres.rll 15-Apr-2005 01:17                  1,088,240  Replsys.sql 15-Apr-2005 01:17                    986,746  Repltran.sql 15-Apr-2005 01:17                         55  Repl_uninstall.sql 31-May-2005 22:41  2000.80.1027.0    287,304  Rinitcom.dll 31-May-2005 22:41  2000.80.1027.0     78,416  Sdiclnt.dll 31-May-2005 22:41  2000.80.1027.0    823,872  Semexec.dll 31-May-2005 22:41  2000.80.1027.0     66,112  Semmap.dll 31-May-2005 22:41  2000.80.1027.0     57,916  Semnt.dll 31-May-2005 22:41  2000.80.1027.0    492,096  Semobj.dll 31-May-2005 22:05  2000.80.1027.0    172,032  Semobj.rll 31-May-2005 22:41  2000.80.1027.0     53,832  Snapshot.exe 15-Apr-2005 01:13                    125,540  Sp3_serv_uni.sql 31-May-2005 22:40  2000.80.1027.0     28,672  Sqlagent.dll 31-May-2005 22:41  2000.80.1027.0    311,872  Sqlagent.exe 31-May-2005 22:40  2000.80.1027.0    168,001  Sqlakw32.dll 31-May-2005 22:41  2000.80.1027.0     33,344  Sqlctr80.dll 31-May-2005 22:41  2000.80.1027.0  4,215,360  Sqldmo.dll 31-May-2005 22:41                     25,172  Sqldumper.exe 31-May-2005 21:38  2000.80.1027.0     28,672  Sqlevn70.rll 31-May-2005 22:41  2000.80.1027.0    156,224  Sqlmaint.exe 31-May-2005 22:41  2000.80.1027.0    180,792  Sqlmap70.dll 31-May-2005 22:41  2000.80.1027.0    188,992  Sqlmmc.dll 31-May-2005 21:52  2000.80.1027.0    479,232  Sqlmmc.rll 31-May-2005 22:41  2000.80.1027.0    401,984  Sqlqry.dll 31-May-2005 22:41  2000.80.1027.0     57,920  Sqlrepss.dll 31-May-2005 22:41  2000.80.1027.0  7,721,041  Sqlservr.exe 31-May-2005 22:41  2000.80.1027.0    590,396  Sqlsort.dll 31-May-2005 22:41  2000.80.1027.0     45,644  Sqlvdi.dll 31-May-2005 22:41  2000.80.1027.0    106,588  Sqsrvres.dll 31-May-2005 22:41  2000.80.1027.0     33,340  Ssmsgnet.dll 31-May-2005 22:41  2000.80.1027.0     33,340  Ssmslpcn.dll 31-May-2005 22:41  2000.80.1027.0     33,340  Ssmsqlgc.dll 31-May-2005 22:41  2000.80.1027.0     82,492  Ssnetlib.dll 31-May-2005 22:41  2000.80.1027.0     25,148  Ssnmpn70.dll 31-May-2005 22:41  2000.80.1027.0    123,456  Stardds.dll 31-May-2005 22:41  2000.80.1027.0    158,268  Svrnetcn.dll 31-May-2005 22:41  2000.80.1027.0     76,416  Svrnetcn.exe 31-May-2005 22:41  2000.80.1027.0     49,228  Ums.dll 31-May-2005 22:41  2000.80.1027.0     74,304  Xplog70.dll 31-May-2005 22:41  2000.80.1027.0     98,872  Xpweb70.dll 31-May-2005 22:41  2000.80.1027.0     57,904  Osql.exe 15-Apr-2005 01:07  1.0.97.0          941,056  Sqlstpcustomdll.dll 15-Apr-2005 01:07                     23,040  Sqlstpcustomdll.rll 15-Apr-2005 01:07  6.1.9.0           344,576  Updspapi.dll

SQL Server 2000 Service Pack 3 64-bit version
  Date         Time   Version         Size        File name      Platform ---  31-May-2005  22:49  2000.80.1027.0      56,832  Dbmslpcn.dll   IA-64 31-May-2005 21:52  2000.80.1027.0     528,960  Dtspump.dll    x86 31-May-2005 21:55  2000.80.1027.0     244,736  Impprov.dll    IA-64 31-May-2005 22:54  2000.80.1027.0     185,856  Msgprox.dll    IA-64 31-May-2005 22:52  2000.80.1027.0     150,528  Odsole70.dll   IA-64 31-May-2005 22:49  2000.80.1027.0      27,136  Opends60.dll   IA-64 31-May-2005 22:52                      19,880  Opends60.lib 31-May-2005 22:51  2000.80.1027.0     148,992  Osql.exe       IA-64 31-May-2005 21:57  2000.80.1027.0     353,280  Qrdrsvc.exe    IA-64 31-May-2005 23:01  2000.80.1027.0     535,552  Replprov.dll   IA-64 31-May-2005 23:03  2000.80.1027.0     769,024  Replrec.dll    IA-64 31-May-2005 23:09  2000.80.1027.0     650,240  Rinitcom.dll   IA-64 31-May-2005 23:04  2000.80.1027.0     160,768  Semmap.dll     IA-64 31-May-2005 23:04  2000.80.1027.0     132,608  Semnt.dll      IA-64 31-May-2005 22:57  2000.80.1027.0      88,576  Snapshot.exe   IA-64 31-May-2005 23:08  2000.80.1027.0      10,240  Sqlagent.dll   IA-64 31-May-2005 23:10  2000.80.1027.0   1,055,232  Sqlagent.exe   IA-64 31-May-2005 23:05  2000.80.1027.0      90,112  Sqlboot.dll    IA-64 01-Jun-2005 01:45  2000.80.1027.0      32,256  Sqlctr80.dll   IA-64 31-May-2005 22:50  2000.80.1027.0     812,032  Sqldata.dll    IA-64 31-May-2005 23:27  2000.80.1027.0  13,845,504  Sqldmo.dll     IA-64 31-May-2005 22:55                      39,936  Sqldumper.exe  IA-64 31-May-2005 23:16  2000.80.1027.0     493,568  Sqlmaint.exe   IA-64 31-May-2005 22:50  2000.80.1027.0      23,040  Sqlmap70.dll   IA-64 31-May-2005 23:03  2000.80.1027.0     152,064  Sqlrepss.dll   IA-64 01-Jun-2005 01:45  2000.80.1027.0  30,138,880  Sqlservr.exe   IA-64 31-May-2005 22:50  2000.80.1027.0     616,960  Sqlsort.dll    IA-64 31-May-2005 22:55  2000.80.1027.0     120,320  Sqlvdi.dll     IA-64 31-May-2005 22:55  2000.80.1027.0     227,328  Sqsrvres.dll   IA-64 31-May-2005 22:49  2000.80.1027.0      53,760  Ssmslpcn.dll   IA-64 31-May-2005 23:03  2000.80.1027.0      59,904  Ssmsqlgc.dll   IA-64 31-May-2005 22:50  2000.80.1027.0     256,000  Ssnetlib.dll   IA-64 31-May-2005 22:51  2000.80.1027.0      20,992  Ssnmpn70.dll   IA-64 31-May-2005 23:00  2000.80.1027.0     430,080  Svrnetcn.dll   IA-64 31-May-2005 23:00  2000.80.1027.0     185,856  Svrnetcn.exe   IA-64 31-May-2005 22:51  2000.80.1027.0     183,296  Xplog70.dll    IA-64 31-May-2005 22:57  2000.80.1027.0     187,392  Xpweb70.dll    IA-64 31-May-2005 22:55  2000.80.1027.0     146,432  Replres.rll 31-May-2005 23:08  2000.80.1027.0      41,984  Sqlagent.rll 31-May-2005 23:08  2000.80.1027.0     574,976  Sqldmo.rll 31-May-2005 22:51  2000.80.1027.0      19,968  Sqlevn70.rll 31-May-2005 23:05  2000.80.1027.0       4,096  Sqlrepss.rll 31-May-2005 23:00  2000.80.1027.0      15,872  Svrnetcn.rll

Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.



WORKAROUND
To work around this problem, use one of the following methods.

Method 1
 Perform NaN validation checks in client applications when you use remote procedure calls (RPCs). Make sure that NaN values are not passed to SQL Server 2000.  Check existing data rows that contain the FLOAT data type or the REAL data type. Look for NaN values. To do this, run the following query: SELECT , CONVERT(varchar(30),) FROM  with a list of one or more column names that are separated by commas to uniquely identify the row in the particular table. Replace  with the name of the table that you want to search. Replace  with the name of the column.</li></ul> </li></ol>

<div class="workaround_section">

Method 2
Do not create indexes that are based on FLOAT columns or on REAL columns.

Method 3
If you can use a precise numeric type in your environment, change the data type of the real or of the float column to the numeric type or the decimal type.

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

<div class="moreinformation_section">

MORE INFORMATION
You can also insert NaN values by using a bulk copy operation. However, in this situation, certain language events such as INSERT statements report an invalid floating point number and do not insert the row.

The following list contains some examples of NaN values:
 * Positive infinity
 * Negative infinity
 * Zero divided by zero (0/0)
 * Quiet NaNs (QNaN)
 * Signaling NaNs (SNaN)

For more information about NaNs, see the Intel Architecture Software Developer's Manual. To obtain this manual, visit the following Intel Web site:

http://www.intel.com/design/pentiumii/manuals/243191.htm

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

For more information about the naming schema for Microsoft SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:

822499 New naming schema for Microsoft SQL Server software update packages

For more information about the terminology that Microsoft uses when correcting software after it is released, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: float real

Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbpubtypekc kbhotfixserver KB900335

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