startup mount 后 系统内存逐渐被分配直到100%

对应信息
Errors in file d:\app\administrator\diag\rdbms\dohis\dohis\trace\dohis_ora_4712.trc:
ORA-48110: error encountered while attempting to get a file lock [INCIDENT] [d:\app\administrator\diag\rdbms\dohis\dohis\lck\AM_1762783_4031814035.lck]
ORA-48180: OS open system call failure
OSD-00001: 附加错误信息
O/S-Error: (OS 1450) 系统资源不足，无法完成请求的服务。
ORA-00600: internal error code, arguments: [ksulnf : SSTDNNLANG init failed], [23], [], [], [], [], [], [], [], [], [], []

根据600 提示 官方建议
Restore the Oracle Home NLS directory, *.nlb files

不太清楚 还原Oracle Home NLS directory 怎么操作 ，请专家指点下。