ORA-00210: cannot open the specified control file ORA-00202: control file:'/u01/app/oracle/oradata/orcl/control01.ctl' ORA-27086: unable to lock file - already in use 思路: 1、看一下"lk" and "sgadef.dbf"这两个文件是不是存在着,如果存在将其删掉; 2、看是不是有后台进程存在; 3、看一下oracle的共享内存段及信号集(semaphores)是不是还存在着;
实际操作: [oracle@linux ~]$ cd$ORACLE_HOME/dbs [oracle@linux dbs]$ ls hc_SID.dat initdw.ora init.ora lkSID orapwSID spfileSID.ora [oracle@linux dbs]$ rm lkSID [oracle@linux dbs]$ ls hc_SID.dat initdw.ora init.ora orapwSID spfileSID.ora [oracle@linux dbs]$ ps -ef|grepora_|grep SID oracle 4981 1 0 09:00? 00:00:00 ora_pmon_SID oracle 4983 1 0 09:00? 00:00:00 ora_psp0_SID oracle 4985 1 0 09:00? 00:00:00 ora_mman_SID oracle 4987 1 0 09:00? 00:00:00 ora_dbw0_SID oracle 4989 1 0 09:00? 00:00:00 ora_lgwr_SID oracle 4991 1 0 09:00? 00:00:01 ora_ckpt_SID oracle 4993 1 0 09:00? 00:00:01 ora_smon_SID oracle 4995 1 0 09:00? 00:00:00 ora_reco_SID oracle 4997 1 0 09:00? 00:00:00 ora_cjq0_SID oracle 4999 1 0 09:00? 00:00:07 ora_mmon_SID oracle 5001 1 0 09:00? 00:00:00 ora_mmnl_SID oracle 5003 1 0 09:00? 00:00:00 ora_d000_SID oracle 5005 1 0 09:00? 00:00:00 ora_s000_SID oracle 5023 1 0 09:00? 00:00:00 ora_qmnc_SID oracle 5133 1 0 09:00? 00:00:00 ora_q000_SID oracle 5139 1 0 09:00? 00:00:00 ora_q001_SID oracle 31755 1 1 13:21? 00:00:00 ora_j000_SID [oracle@linux dbs]$ ps -ef|grepora_|grep SID|grep pmon oracle 4981 1 0 09:00? 00:00:00 ora_pmon_SID [oracle@linux dbs]$ kill -9 4981 [oracle@linux dbs]$ ps -ef|grepora_|grep SID|grep pmon [oracle@linux dbs]$ ipcs -m ------ Shared Memory Segments-------- key shmid owner perms bytes nattch status 重新startup数据库,问题解决。
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