Where is sqlldr




















Then, execute those SQL statements. Creates a table in the database that describes all fields in the datafile that will be loaded into any table. This is because the field names may not be unique across the different tables in the control file. Built-in functions and SQL strings cannot be used for object elements when you insert data into a database table from an external table. FILE specifies the database file to allocate extents from.

It is used only for parallel loads. LOAD specifies the maximum number of logical records to load after skipping the specified number of records. No error occurs if fewer than the maximum number of records are found. By default, the multithreading option is always enabled set to true on multiple-CPU systems.

On single-CPU systems, multithreading is set to false by default. To use multithreading between two single-CPU systems, you must enable multithreading; it will not be on by default.

This will allow stream building on the client system to be done in parallel with stream loading on the server system. Multithreading functionality is operating system-dependent. Not all operating systems support multithreading. For example, the command line could read:. The maximum size allowed is 20 megabytes MB for both direct path loads and conventional path loads.

In the conventional path method, the bind array is limited by the size of the read buffer. Therefore, the advantage of a larger read buffer is that more data can be read before a commit operation is required. Oracle Database Concepts. Oracle Database Administrator's Guide. The value for this parameter identifies the statement that is resumable.

The value of the parameter specifies the time period during which an error must be fixed. If the error is not fixed within the timeout period, execution of the statement is terminated, without finishing. Keep in mind that if you specify a low value for ROWS and then attempt to compress data using table compression, your compression ratio will probably be degraded.

Oracle recommends that you either specify a high value or accept the default value when compressing data. Conventional path loads only: ROWS specifies the number of rows in the bind array. Direct path loads only: ROWS identifies the number of rows you want to read from the datafile before a data save. The default is to read all rows and save data once at the end of the load.

The actual number of rows loaded into a table on a save is approximately the value of ROWS minus the number of discarded and rejected records since the last save. For example, you can suppress the header and feedback messages that normally appear on the screen with the following command-line argument:. Header messages still appear in the log file. ERRORS - Suppresses the data error messages in the log file that occur when a record generates an Oracle error that causes it to be written to the bad file.

A count of rejected records still appears. SKIP specifies the number of logical records from the beginning of the file that should not be loaded. This parameter continues loads that have been interrupted for some reason. It is used for all conventional loads, for single-table direct loads, and for multiple-table direct loads when the same number of records was loaded into each table. It is not used for multiple-table direct loads when a different number of records was loaded into each table.

If a WHEN clause is also present and the load involves secondary data, the secondary data is skipped only if the WHEN clause succeeds for the record in the primary data file.

It causes the index partitions that would have had index keys added to them to be marked Index Unusable instead, because the index segment is inconsistent with respect to the data it indexes.

Index segments that are not affected by the load retain the Index Unusable state they had prior to the load. Already have an account?

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