RMAN备份在文件上出现写入错误而失败。

Question

我正试图在一台linux服务器上对我的数据库进行0级增量备份。

 backup incremental level 0 database;

当我运行它时，我得到

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 06/03/2020 10:52:40
ORA-19502: write error on file "/opt/oracle/product/12.2.0/rman/full_1jv1ql2l_51_1", block number 1195008 (block size=8192)
ORA-27072: File I/O error
Additional information: 4
Additional information: 1195008
Additional information: 995328

检查磁盘空间的结果是

Filesystem                Size  Used Avail Use% Mounted on
devtmpfs                  7.9G     0  7.9G   0% /dev
tmpfs                     7.9G     0  7.9G   0% /dev/shm
tmpfs                     7.9G  2.2M  7.9G   1% /run
tmpfs                     7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda1                  30G   20G  9.2G  68% /
/dev/sda3                  19G  249M   18G   2% /home
/dev/sda4                 430G  255G  154G  63% /oracle

我做的所有研究都在说我的空间不够用了，但显然我没有。我还缺什么东西才能让这个系统运行起来？

输出的

show parameter reco;

这是我的RMAN配置

using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name ORCL are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 2 DAYS;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT   '/opt/oracle/product/12.2.0/rman/full_%u_%s_%p';
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE RMAN OUTPUT TO KEEP FOR 2 DAYS;
CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/opt/oracle/product/12.2.0/dbs/snapcf_orcl.f'; # default

Answer 1

关于你的 "df -h "输出，你是想在文件系统 opt 下进行备份，该文件系统 opt 下的可用空间只有 9G，而 Oracle 有 154G，你需要在你的备份脚本中分配通道来确定是 Oracle 的位置。

谢谢您 :)

Answer 2

关于我的信息 "ORA-19502 "是与空间有关的，或者通常是 "The filesystem has insufficient disk space available"，你检查过了吗，或者你能把df -h的输出贴出来让我们看看吗？