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oracle rac 19c pdb实例当掉
2022-07-27 09:45:00 【王zz】
Linux oracle 19c rac 环境,7月20日凌晨0点五分左右pdb数据库宕掉,查看告警日志发现
rrors in file /oracle/app/oracle/diag/rdbms/rmscdb/rmscdb2/trace/rmscdb2_o000_43454.trc (incident=128972) (PDBNAME=CDB$ROOT):
ORA-00603: ORACLE server session terminated by fatal error
ORA-27504: IPC error creating OSD context
ORA-27300: OS system dependent operation:sendmsg failed with status: 105
ORA-27301: OS failure message: No buffer space available
ORA-27302: failure occurred at: sskgxpsnd2
2022-07-20T00:05:01.929059+08:00
Errors in file /oracle/app/oracle/diag/rdbms/rmscdb/rmscdb2/trace/rmscdb2_rms0_160427.trc (incident=102889) (PDBNAME=CDB$ROOT):
ORA-00240: control file enqueue held for more than 120 seconds
可能是ORA-00240引起的,但查询文档可能是bug,但这个bug在oracle18c已经修复,目前不知道怎么回事?
其他答案1:
其他答案2:
ORA-27301: OS Failure Message: No Buffer Space Available / ORA-27302: failure occurred at: sskgxpsnd2 Source Script (文档 ID 2322410.1)

其他答案3:
1、在/etc/sysctl.conf中增加vm.min_free_kbytes参数,vm.min_free_kbytes=内存*0.4%(比如内存8g,那么vm.min_free_kbytes=8*1024*1024*0.004)
2、修改lo mtu为16436。
临时修改ifconfig lo mtu 16436
或永久修改vi /etc/sysconfig/network-scripts/ifcfg-lo MTU=16436
看看这个,遇到的问题和你一样
其他答案4:
发下这个trace吧:
/oracle/app/oracle/diag/rdbms/rmscdb/rmscdb2/trace/rmscdb2_rms0_160427.trc
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