ORA-00444: background process DBRM failed while starting

SQL> startup 
报错：
ORA-00444: background process DBRM failed while starting
ORA-00020:maximum number of processes () exceeded

解决：
startup pfile= FILENAME

其中FILENAME为：$ORACLE_BASE/admin/数据库名称/pfile目录下的init.ora.052015182150形式的文件
例如：startup pfile=/opt/oracle/admin/orcl/pfile/init.ora.1113201475246