oracle sqlldr的用法
    English Answer:
    Oracle SQLLoader is a utility used to load data from external files into Oracle database tables. It is a powerful tool that allows for efficient and flexible data loading, supporting various data formats and providing robust error handling capabilities.
    Syntax:
    sqlldr [options] [parameters] control_file.
    Options:
    -control (control_file): Specifies the path and name of the control file that defines the loading parameters.
    -data (data_file): Specifies the path and name of the external data file to be loaded.
    -log (log_file): Specifies the path and name of the log file where SQLLoader will record its activities and errors.
    -bad (bad_file): Specifies the path and name of the file to which rejected records will be written.
    -discardmax (number): Sets the maximum number of rejected records allowed before SQLLoader aborts the loading process.
    Parameters:
    username/password: Specifies the Oracle database username and password for connecting to the database.
    connect_string: Specifies the database connection string, including the hostname, port, and database name.
    bindfile: Specifies the path to a file containing bind variables that can be referenced in the control file.
    direct: Enables direct path loading, bypassing the Oracle buffer cache for improved performance.
    multithreading: Specifies the number of parallel threads to use for loading, improving speed on multi-core systems.
    Control File:
    The control file is a text file that defines the parameters for the SQLLoader operation. It includes the following sections:
    LOAD DATA: Specifies the target table and columns to be loaded.
    OPTIONS: Sets the loading options, such as the delimiter, field terminator, and record terminator.
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