linux资源限制导致数据库异常

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标题:linux资源限制导致数据库异常

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一起由于liunx系统资源限制导致数据库无法启动案例分享
数据库启动报ORA-01157错

SQL> startup
ORACLE instance started.

Total System Global Area 3340451840 bytes
Fixed Size		    2217952 bytes
Variable Size		 1862273056 bytes
Database Buffers	 1459617792 bytes
Redo Buffers		   16343040 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 5 - see DBWR trace file
ORA-01110: data file 5: '/home/oracle/oradata/XIFENFEI.dbf'

该错误一般是由于文件丢失或者路径错误导致

alert日志显示

Sun Apr 07 20:57:03 2019
ALTER DATABASE OPEN
Sun Apr 07 20:57:03 2019
Errors in file /dbdata/oracle/diag/rdbms/orcl/orcl/trace/orcl_dbw0_2681.trc:
ORA-01157: cannot identify/lock data file 5 - see DBWR trace file
ORA-01110: data file 5: '/home/oracle/oradata/XIFENFEI.dbf'
ORA-27092: size of file exceeds file size limit of the process
Additional information: 262144
Additional information: 262145
Errors in file /dbdata/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_2802.trc:
ORA-01157: cannot identify/lock data file 5 - see DBWR trace file
ORA-01110: data file 5: '/home/oracle/oradata/XIFENFEI.dbf'
ORA-1157 signalled during: ALTER DATABASE OPEN...
Sun Apr 07 20:57:04 2019
Errors in file /dbdata/oracle/diag/rdbms/orcl/orcl/trace/orcl_m000_2804.trc  (incident=38578):
ORA-00600: internal error code, arguments: [kcidr_io_check_common_6], [10], 
     [/home/oracle/oradata/XIFENFEI.dbf], [8192], [2], [5], [], [], [], [], [], []
ORA-27092: size of file exceeds file size limit of the process

这里看到提示ORA-27092: size of file exceeds file size limit of the process
查看系统limit配置

[oracle@XFF ~]$ ulimit -a
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) 640000
scheduling priority             (-e) 0
file size               (blocks, -f) 2097152
pending signals                 (-i) 128489
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 131072
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 131072
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

一般操作系统block size为1k,这里限制文件大小为2097152=(2G)
查看文件

[oracle@XFF ~]$ ls -l /home/oracle/oradata/XIFENFEI.dbf
-rw-r-----. 1 oracle oinstall 2147491840 Apr  7 19:04 /home/oracle/oradata/XIFENFEI.dbf

文件大小为2097160>2097152,导致异常

设置系统对文件大小限制2097152kb

[root@XFF ~]# ulimit -f 102400000
[root@XFF ~]# su - oracle
[oracle@XFF ~]$ ulimit -a
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) 640000
scheduling priority             (-e) 0
file size               (blocks, -f) 102400000
pending signals                 (-i) 128489
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 131072
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 131072
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

重启数据库,open成功

SQL> shutdown immediate;      
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area 3340451840 bytes
Fixed Size		    2217952 bytes
Variable Size		 1862273056 bytes
Database Buffers	 1459617792 bytes
Redo Buffers		   16343040 bytes
Database mounted.
Database opened.