ORA01102: cannot mount database in EXCLUSIVE mode

SQL> startup
ORACLE instance started.
Total System Global Area 1224736768 bytes
Fixed Size                  2020384 bytes
Variable Size             318770144 bytes
Database Buffers          889192448 bytes
Redo Buffers               14753792 bytes
ORA-01102: cannot mount database in EXCLUSIVE mode

cd $ORACLE_HOME/dbs --发现一lk$SID文件

fuser -u lkPD
lkCAPITALV:            368(oracle)   370(oracle)   372(oracle)   374(oracle)   376(oracle)   378(oracle)   380(oracle)   382(oracle)   384(oracle)   386(oracle)   388(oracle)   397(oracle)  1472(oracle)  1557(oracle)  8852(oracle)
fuser -k lkPD
再次启动Oracle就好了