Oracle apex Oracle Rest数据服务安装错误

我正在尝试在Apex上安装Oracle Rest数据服务，而它在安装时显示以下错误并存在

Installing Oracle REST Data Services version 3.0.0.343.08.03
... Log file written to C:\ords\logs\ordsinstall_2015-01-16_111716_00946.log
... Verified database prerequisites
Jan 16, 2015 11:17:19 AM oracle.dbtools.installer.Runner executeSQLScript
WARNING: Error executing script: ords_create_schema.sql Error: ORA-65096: invali
d common user or role name
ORA-06512: at line 5

 Refer to log file C:\ords\logs\ordsinstall_2015-01-16_111716_00946.log for deta
ils

最后还显示了以下内容

        at oracle.dbtools.rt.config.setup.VerifySchema.execute(VerifySchema.java
:80)
        at oracle.dbtools.cmdline.DefaultCommand.execute(DefaultCommand.java:83)

        at oracle.dbtools.cmdline.Commands.execute(Commands.java:162)
        at oracle.dbtools.cmdline.Commands.main(Commands.java:133)
        at oracle.dbtools.cmdline.Commands.main(Commands.java:291)
        ... 5 more

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在设置示例模式之前，只需设置两个任务环境变量即可

export TWO_TASK=ORCL
sqlplus sys/passwd@ORCL as sysdba  <-- Normal use
sqlplus sys/passwd as sysdba <-- automaticly uses @ORCL

导出两个任务=ORCL

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sqlplus系统/passwd@ORCL作为sysdba，此问题不属于此社区安装过程中是否提示您输入用户名？也许是12c的问题？