OraCmd can unload Oracle all tables data in a schema at one time.
This section contains a short example showing how OraCmd unload all tables data.
unload table=all folder=e:\temp\tables delimiter="," header=y;
Or a batch file(replace the userid with your own database user info. The lines wrap in this page, but in the file is 1 line.):
"C:\Program files\OraCmd\OraCmd" userid=hr/hr@localhost:1521:xe task=unload table=all folder=e:\temp\tables delimiter="," header=y
delimiter: delimiter char ("|",",","#","TAB","WHITESPACE") quote: quote char (quote="'" => single quotes, quote="chr(34)" => double quotes) recorddelimiter: record delimiter, default is CRLF header: y|n, print field name at first line exportclob: y|n, export clob data to file table: table name ("all" for unload all table) query: sql query string (can not use multi-line sql) sqlfile: sql script file contains the query you want to unload schema: schema name, use this prameter to unload specific schema's data, if not set, use logon user's default schema datafile: data file name folder: data files folder (for unload all table) dateformat: date format (e.g. "YYYY-MM-DD HH24:MI:SS") timestampformat: timestamp format (e.g. ''YYYY-MM-DD-HH24.MI.SS.FF6'') buffer: Number of rows that will be transferred across the network at the same time. This property can have a great impact on performance. So it is preferable to choose the optimal value of buffer for each SQL statement and software - hardware configuration experimentally. The default value is 25. quit = y|n (quit OraCmd after run batch file)