SQL Loader in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

SQL Loader in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

It is also called as bulk loader or performance loader. It is an utility program which is used to transfer data from flat file to oracle database.

SQL Loader executes control file based on the flat file. whenever we submit control file into SQL Loader tool then data transfer from flat file to oracle database. During this process SQL Loader tool automatically creates log file as same as control file.

Log files stores all other files information and also stores loaded, rejected number of records number. Log files stores oracle error numbers, error messages.

Whenever transferring data from flat file to oracle database based on some reasons some records are not loaded into database. those rejected or discarded records stores in bad file or discard file.

Bad files stores rejected records based on datatype mismatch or business rule violation. Discard files stores rejected records based on when condition within control file.

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