Problem Note 43262: Queries that reference tables in libraries that are assigned using the META libname engine might perform poorly
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If you submit a query that joins multiple tables from a library that is assigned using the META libname engine, the query might not be passed to the database for execution. When this occurs, the data records are retrieved from the database and the join is performed within the SAS session. Consequently, the query might take longer to execute than it would if it were passed through to the database. This is particularly true if the tables are large.
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 | Product Release | SAS Release | ||
| Reported | Fixed* | Reported | Fixed* | |||
| SAS System | Base SAS | Microsoft Windows Server 2003 Datacenter 64-bit Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 |
| Microsoft® Windows® for 64-Bit Itanium-based Systems | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| z/OS | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2003 Enterprise 64-bit Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows XP 64-bit Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft® Windows® for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2003 Datacenter Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2003 Enterprise Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2003 Standard Edition | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2003 for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2008 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows Server 2008 for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Microsoft Windows XP Professional | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Enterprise 32 bit | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Enterprise x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Home Premium 32 bit | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Home Premium x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Professional 32 bit | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Professional x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Ultimate 32 bit | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows 7 Ultimate x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows Vista | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Windows Vista for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| 64-bit Enabled AIX | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| 64-bit Enabled HP-UX | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| 64-bit Enabled Solaris | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| HP-UX IPF | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Linux | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Linux for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| OpenVMS on HP Integrity | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
| Solaris for x64 | 9.21_M3 | 9.3_M1 | 9.2 TS2M3 | 9.3 TS1M1 | ||
A fix for this issue for Base SAS 9.21_M3 is available at:
http://ftp.sas.com/techsup/download/hotfix/HF2/B25.html#43262
The META libname engine optimizes queries differently than the native database engines do, which can impede performance.
| Type: | Problem Note |
| Priority: | medium |
| Topic: | Data Management ==> Data Sources ==> Data source access Data Management ==> Data Sources ==> External Databases Data Management ==> Data Sources ==> External Databases ==> Adabas Data Management ==> Data Sources ==> External Databases ==> AsterData Data Management ==> Data Sources ==> External Databases ==> Datacom Data Management ==> Data Sources ==> External Databases ==> DB2 Data Management ==> Data Sources ==> External Databases ==> Dbase Data Management ==> Data Sources ==> External Databases ==> GreenPlum Data Management ==> Data Sources ==> External Databases ==> HP Neoview Data Management ==> Data Sources ==> External Databases ==> IDMS Data Management ==> Data Sources ==> External Databases ==> IMS Data Management ==> Data Sources ==> External Databases ==> Informix Data Management ==> Data Sources ==> External Databases ==> Ingres Data Management ==> Data Sources ==> External Databases ==> Lotus Data Management ==> Data Sources ==> External Databases ==> MS Access Data Management ==> Data Sources ==> External Databases ==> MS Excel Data Management ==> Data Sources ==> External Databases ==> MS SQL Server Data Management ==> Data Sources ==> External Databases ==> MySQL Data Management ==> Data Sources ==> External Databases ==> Netezza Data Management ==> Data Sources ==> External Databases ==> ODBC (Open Database Connectivity) Data Management ==> Data Sources ==> External Databases ==> OLEDB Data Management ==> Data Sources ==> External Databases ==> Oracle Data Management ==> Data Sources ==> External Databases ==> Oracle RDB Data Management ==> Data Sources ==> External Databases ==> Redbrick Data Management ==> Data Sources ==> External Databases ==> SPSS Data Management ==> Data Sources ==> External Databases ==> Sybase Data Management ==> Data Sources ==> External Databases ==> Sybase IQ Data Management ==> Data Sources ==> External Databases ==> System 2000 Data Management ==> Data Sources ==> External Databases ==> Teradata Data Management ==> Data Sources ==> Metadata |
| Date Modified: | 2011-05-25 15:47:09 |
| Date Created: | 2011-05-13 12:37:34 |