[Oracle]10g中SPOOL内容追加至文件

以前在SQLPLUS中运行脚本时用SPOOL保存运行结果, 可是SPOOL每次都将原来的文件覆盖了, 现在有了10g就没这个问题了：
e:>sqlplus xsb@tns1SQL*Plus: Release 10.1.0.2.0 - ProdUCtion on 星期四 4月 13 15:24:36 2006Copyright (c) 1982, 2004, Oracle. All rights reserved.Connected to:Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - ProductionWith the Partitioning, OLAP and Data Mining optionsSQL> spool 1.txtSQL> select *from v$version;BANNER----------------------------------------------------------------Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - ProdPL/SQL Release 10.2.0.1.0 - ProductionCORE 10.2.0.1.0 ProductionTNS for 32-bit Windows: Version 10.2.0.1.0 - ProductionNLSRTL Version 10.2.0.1.0 - ProductionSQL> spool offSQL> spool append 1.txtSP2-0108: The filenames CREATE, REPLACE, APPEND, FILE, and abbreviations may not be used.SP2-0769: Usage: SPOOL { <file> OFF OUT }where <file> is file_name[.ext] [CRE[ATE]REP[LACE]APP[END]]SQL> spool 1.txt appendSQL> select *from v$version;BANNER----------------------------------------------------------------Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - ProdPL/SQL Release 10.2.0.1.0 - ProductionCORE 10.2.0.1.0 ProductionTNS for 32-bit Windows: Version 10.2.0.1.0 - ProductionNLSRTL Version 10.2.0.1.0 - ProductionSQL> spool off