SUPPORT / SAMPLES & SAS NOTES
Problem Note 56979: A segmentation violation or Read access violation might occur when you are accessing a DBMS table via the SQL procedure
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A segmentation violation or a Read access violation error can occur when the following is true:
- You have an SQL view that references a database management system (DBMS) table and creates a new variable constant.
- You have a second SQL view that references a different DBMS table.
- You have a third SQL view that
- contains the constant variable that was created in the first SQL view, and this variable is included in the SELECT clause along with a column modifier like length, format, or label
- joins the first and second SQL views with two other DBMS tables referenced with a LIBNAME engine, and
- contains a WHERE clause that is used to subset the results of the joins.
- And you have a fourth SQL view that references the third SQL view and renames the constant variable in the SELECT clause.
The segmentation violation might look similar to the following:
Segmentation Violation In Task [ DATASTEP ] sqltxt2+0x1f10c - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqludf+0x065a0 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x264fc - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x31934 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqludf+0x07430 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x30034 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x0d8a8 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x15abc - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x0085c - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqltxt2+0x0034c - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlu sqlpnas+0x01268 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlp sqlpsel+0x021ec - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlp sqlplan+0x00044 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlp sqlprep+0x00618 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sassqlp esoopen+0x00658 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasesql yyoopen+0x04c48 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasyoio yoopen+0x00554 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasyoio dsdbivl+0x0023c - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasdsa dscdsio+0x01628 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasdsc ysprstm+0x00d14 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasxshel dsccomp+0x00498 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasdsc sasds+0x00270 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sasds vvtentr+0x00130 - /sas/10101_sas92ebidi/SASFoundation/9.2/sasexe/sas ___makecontext_v2+0x00108 - /lib/sparcv9/libc.so.1
The Read access violation might look similar to the following:
ERROR: An exception has been encountered. Please contact technical support and provide them with the following traceback information: The SAS task name is [DATASTEP] ERROR: Read Access Violation DATASTEP Exception occurred at (28FED171) Task Traceback Address Frame (DBGHELP API Version 4.0 rev 5) 0000000028FED171 00000000071B9030 sassqlu:tkvercn1+0x2C131 0000000028FEF919 00000000071B9320 sassqlu:tkvercn1+0x2E8D9 0000000028FEA64C 00000000071B95D0 sassqlu:tkvercn1+0x2960C 0000000028FD5717 00000000071B9800 sassqlu:tkvercn1+0x146D7 0000000028FDDED1 00000000071B9AA0 sassqlu:tkvercn1+0x1CE91 0000000028FE58C8 00000000071B9C20 sassqlu:tkvercn1+0x24888 0000000028FCB8BA 00000000071BA180 sassqlu:tkvercn1+0xA87A 000000002989EA14 00000000071BA188 sassqlp:tkvercn1+0x3D9D4 000000002989D41E 00000000071BAB00 sassqlp:tkvercn1+0x3C3DE 000000002988EA92 00000000071BACF0 sassqlp:tkvercn1+0x2DA52 00000000298BD50D 00000000071BADF0 sassqlp:tkvercn1+0x5C4CD 0000000029C218D4 00000000071BADF8 sasesql:tkvercn1+0x894 0000000029808C1D 00000000071BB068 sasyoio:tkvercn1+0x17BDD 00000000298051A1 00000000071BEFB0 sasyoio:tkvercn1+0x14161 000000002999D33B 00000000071BEFB8 sasdsa:tkvercn1+0xC2FB 00000000299CBE77 00000000071BF1D8 sasdsc:tkvercn1+0xAE37 0000000004D7075B 00000000071BF2A8 sasxshel:tkvercn1+0x4F71B 00000000299C1286 00000000071BFC50 sasdsc:tkvercn1+0x246 000000002997124A 00000000071BFC58 sasds:tkvercn1+0x20A 0000000003868FD7 00000000071BFCB8 sashost:Main+0xF917 000000000386D61D 00000000071BFF50 sashost:Main+0x13F5D 00000000772F5A4D 00000000071BFF58 kernel32:BaseThreadInitThunk+0xD 000000007742B831 00000000071BFF88 ntdll:RtlUserThreadStart+0x21
To work around this issue, create intermediate tables rather than views.
Click the Hot Fix tab in this note to access the hot fix for this issue.
Operating System and Release Information
| Product Family | Product | System | SAS Release | |
| Reported | Fixed* | |||
| SAS System | Base SAS | z/OS | 9.2 TS2M3 | 9.4 TS1M3 |
| Microsoft® Windows® for 64-Bit Itanium-based Systems | 9.2 TS2M3 | |||
| Microsoft Windows Server 2003 Datacenter 64-bit Edition | 9.2 TS2M3 | |||
| Microsoft Windows Server 2003 Enterprise 64-bit Edition | 9.2 TS2M3 | |||
| Microsoft Windows XP 64-bit Edition | 9.2 TS2M3 | |||
| Microsoft® Windows® for x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2003 Datacenter Edition | 9.2 TS2M3 | |||
| Microsoft Windows Server 2003 Enterprise Edition | 9.2 TS2M3 | |||
| Microsoft Windows Server 2003 Standard Edition | 9.2 TS2M3 | |||
| Microsoft Windows Server 2003 for x64 | 9.2 TS2M3 | |||
| Microsoft Windows Server 2008 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2008 R2 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2008 for x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Microsoft Windows XP Professional | 9.2 TS2M3 | |||
| Windows 7 Enterprise 32 bit | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Enterprise x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Home Premium 32 bit | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Home Premium x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Professional 32 bit | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Professional x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Ultimate 32 bit | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows 7 Ultimate x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Windows Vista | 9.2 TS2M3 | |||
| Windows Vista for x64 | 9.2 TS2M3 | |||
| 64-bit Enabled AIX | 9.2 TS2M3 | 9.4 TS1M3 | ||
| 64-bit Enabled HP-UX | 9.2 TS2M3 | 9.4 TS1M3 | ||
| 64-bit Enabled Solaris | 9.2 TS2M3 | 9.4 TS1M3 | ||
| HP-UX IPF | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Linux | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Linux for x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||
| OpenVMS on HP Integrity | 9.2 TS2M3 | 9.4 TS1M3 | ||
| Solaris for x64 | 9.2 TS2M3 | 9.4 TS1M3 | ||