.NET/ASP.NET/C#/VB.NET PDF Document SDK

Wherever possible, use positional fields rather than delimited fields SQL*Loader can move from field to field much faster if it s given the position of the field Map physical and logical records on a one-to-one basis Disable constraints before the load, as the constraints will slow down the loading Of course, you may sometimes end up with errors while enabling the constraints, but it s a small price to pay for a much faster data load, especially for large tables If you re using the direct-path loading method, specify the SORTED_INDEXES clause to optimize the load performance If you re doing large data loads, it s smart to drop the indexes on the tables before the load Index maintenance will slow down your SQL*Loader session If it isn t possible to drop the indexes, you can make them unusable and use the SKIP_UNUSABLE_INDEXES clause during the load.

barcode font excel 2007, microsoft office barcode generator, download barcode font excel 2003, barcode excel 2010 microsoft, barcode excel 2003 free, create barcodes in excel 2010 free, microsoft excel barcode font download, excel barcode inventory, barcode font for excel 2010 free download, create barcode excel 2013,

// SampleCipher is CLS-compliant because of assembly level attribute { public: void M1(int); // M2 is marked as not CLS-compliant, because it has an argument of // a not CLS-compliant type [CLSCompliant(false)] void M2(unsigned int); }; } Unfortunately, the C++/CLI compiler does not emit warnings when a type or a function is marked as CLS-compliant even if it does not conform to one or more of the CLS rules. To decide whether you should mark a type or type member as CLS-compliant, you should know the following important CLS rules: Names of types and type members must be distinguishable by case-insensitive languages (CLS rule 4). Global static fields and methods are not CLS-compliant (CLS rule 36). Custom attributes should only contain fields of type System::Type, System::String, System::Char, System::Boolean, System::Int[16|32|64], System::Single, and System::Double (CLS rule 34). Managed exceptions should be of type System::Exception or of a type derived from System::Exception (CLS rule 40). Property accessors must either be all virtual or all nonvirtual (CLS rule 26). Boxed value types are not CLS-compliant (CLS rule 3). As an example, the following method is not CLS-compliant: void f(int^ boxedInt);. Unmanaged pointer types are not CLS-compliant (CLS rule 17). This rule also implies C++ references. As discussed in 8, native classes, structures, and unions are accessed via native pointers, too. This implies that these native types are not CLS compliant, either.

If it s a direct load, use the SKIP_INDEX_MAINTENANCE clause..

Using SQL*Loader is efficient, but it s not without its share of headaches. This section describes how to perform some special types of operations during data loads.

The workaround removes the use of the read command altogether. This modified version has the same functionality, but it uses two separate commands instead of a pipeline of two commands.

You can use WHEN clauses during data loads to limit the load to only those rows that match certain conditions. For example, in a data file, you can pick up only those records that have a field matching certain criteria. Here s an example that shows how to use the WHEN clause in a SQL*Loader control file: LOAD DATA INFILE * INTO TABLE stagetbl APPEND WHEN (activity_type <>'H') and (activity_type <>'T') FIELDS TERMINATED BY ',' TRAILING NULLCOLS /* Table columns here . . .*/ BEGINDATA /* Data here . . .*/ The WHEN condition will reject all records where the data record field matching the activity_ type column in the stagetbl table is neither H nor T.

You can use the user pseudo-variable to load the username into a table during the load. The following example illustrates the use of this variable. Note that the target table stagetbl should have a column called loaded_by so SQL*Loader can insert the username into that column. LOAD DATA INFILE * INTO TABLE stagetbl INSERT (loaded_by "USER") /* Table columns and the data follow . . .*/

If you try to load any field larger than 255 bytes into a table, even if the table column is defined as VARCHAR2(2000) or a CLOB, SQL*Loader won t be able to load the data. You ll get an error informing you that the Field in data file exceeds maximum length. To manage the load of the large field, you need to specify the size of the table column in the control file when you re matching table columns to the data fields, as in this example (for a table column called text): LOAD DATA INFILE '/u01/app/oracle/oradata/load/testload.txt' INSERT INTO TABLE test123 FIELDS TERMINATED BY ',' (text CHAR(2000))

Suppose you have a sequence named test_seq, and you want this sequence to be incremented each time you load a data record into your table. Here s how to do it: LOAD DATA INFILE '/u01/app/oracle/oradata/load/testload.txt' INSERT INTO TABLE test123 (test_seq.nextval,. . .)