PLSQL的中文注释为???

在PL/SQL中，中文注释默认情况下可能会显示为乱码。解决这个问题的办法是在系统环境变量中设置"NLS_LANG"的值。如果你想将注释转换为UTF8字符集，可以将"NLS_LANG"设置为"AMERICAN_AMERICA.UTF8"，然后重新启动PL/SQL Developer。如果你想将注释转换为GBK字符集，可以将"NLS_LANG"设置为"SIMPLIFIED CHINESE_CHINA.ZHS16GBK"，然后重新启动PL/SQL Developer。这样设置之后，中文注释应该能够正确显示，不再是乱码。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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