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【DM版本】:DM8
【操作系统】：
【CPU】:
【问题描述】*：```language
SQL> SQL> backup database backupset '/dmdb8/dmtmp/db_full_bak_11' parallel 4 compressed level 5;
backup database backupset '/dmdb8/dmtmp/db_full_bak_11' parallel 4 compressed level 5;

backup database backupset '/dmdb8/dmtmp/db_full_bak_11' parallel 4 compressed level 5;
*
line 1, column 67, nearby [compressed] has error[-2007]:
Syntax error.
used time: 0.431(ms). Execute id is 0.