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Sql that has been installed Ensuring Sufficient Disk Space Before you run Export, ensure that there is sufficient disk or tape storage space to write the export file. If there is not enough space, Export terminates with a write-failure error. You can use table sizes to estimate the maximum space needed. You can find table sizes in the USER_SEGMENTS view of the Oracle data dictionary. The following query displays disk usage for all tables: SELECT SUM(BYTES) FROM USER_SEGMENTS WHERE SEGMENT_TYPE=’TABLE’; The result of the query does not include disk space used for data stored in LOB (large object) or VARRAY columns or in partitioned tables.

Be sure to read Chapter 7, "Loading Objects, LOBs, and Collections" for a complete description of how this now works. Additionally, you should be sure to read the information in the following sections: – Specifying Filler Fields on page 6-6 – Using the WHEN, NULLIF, and DEFAULTIF Clauses on page 6-31 – Applying SQL Operators to Fields on page 6-49 Part I Export and Import The chapters in this section describe the Oracle Export and Import utilities: Chapter 1, "Export" This chapter describes how to use Export to write data from an Oracle database into transportable files.

Dmp Specifies the names of the export files. dmp, but you can specify any extension. Because Export supports multiple export files (see the parameter FILESIZE on page 1-19), you can specify multiple filenames to be used. When Export reaches the value you have specified for the maximum FILESIZE, Export stops writing to the current file, opens another export file with the next name specified by the FILE parameter, and continues until complete or the maximum value of FILESIZE is again reached. If you do not specify sufficient export filenames to complete the export, Export will prompt you to provide additional filenames.

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