如果rman中不执行release channel 会怎么样

如果rman中不执行release channel 会怎么样

Oracle数据库中rman备份脚本非常实用
　　查询字符集
　　SQL> select * from nls_database_parameters;
　　NLS_CHARACTERSET
　　AL32UTF8
　　备份时字符集很重要，不然会出乱码
　　一、0级备份（全备）红色是要修改的，根据个人的存放位置。
　　[oracle@oracle122 script]$ cat db_bak0.rman
　　run
　　{
　　configure retention policy to recovery window of 8 days;
　　configure controlfile autobackup on;
　　configure controlfile autobackup format for device type disk to '/home/oracle/rmanbak/%F';
　　allocate channel ch1 device type disk format '/home/oracle/rmanbak/inc0_%d_%s_%p_%u_%T';
　　backup incremental level 0 tag='level 0' database skip inaccessible filesperset 10 plus archivelog filesperset 20;
　　release channel ch1;
　　}
　　allocate channel for maintenance device type disk;
　　crosscheck backup;
　　delete noprompt expired backup;
　　delete noprompt obsolete;
　　delete noprompt archivelog until time 'sysdate-30';
　　0级运行脚本
　　[oracle@oracle122 script]$ cat exec_0_level.sh
　　ORACLE_HOSTNAME=oracle122; export ORACLE_HOSTNAME
　　ORACLE_BASE=/u01/app; export ORACLE_BASE
　　ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1; export ORACLE_HOME
　　ORACLE_SID=orcl; export ORACLE_SID
　　ORACLE_TERM=xterm; export ORACLE_TERM
　　PATH=/usr/sbin:$PATH; export PATH
　　PATH=$ORACLE_HOME/bin:$PATH; export PATH
　　export DATE=$(date +%Y_%m_%d)
　　export NLS_LANG="Simplified Chinese_china".AL32UTF8
　　/u01/app/oracle/product/11.2.0/dbhome_1/bin/rman target sys/sys_admin cmdfile /home/oracle/rmanbak/script/db_bak0.rman log /home/oracle/rmanbak/script/log/rman_$DATE.log append
　　二、1级备份（增量）
　　[oracle@oracle122 script]$ cat db_bak1.rman
　　run
　　{
　　configure retention policy to recovery window of 8 days;
　　configure controlfile autobackup on;
　　configure controlfile autobackup format for device type disk to '/home/oracle/rmanbak/%F';
　　allocate channel ch1 device type disk format '/home/oracle/rmanbak/inc1_%d_%s_%p_%u_%T';
　　backup incremental level 1 tag='level 1' database skip inaccessible filesperset 10 plus archivelog filesperset 20;
　　release channel ch1;
　　}
　　allocate channel for maintenance device type disk;
　　crosscheck backup;
　　delete noprompt expired backup;
　　delete noprompt obsolete;
　　delete noprompt archivelog until time 'sysdate-30';
　　1级运行脚本
　　[oracle@oracle122 script]$ cat exec_1_level.sh
　　ORACLE_HOSTNAME=oracle122; export ORACLE_HOSTNAME
　　ORACLE_BASE=/u01/app; export ORACLE_BASE
　　ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1; export ORACLE_HOME
　　ORACLE_SID=orcl; export ORACLE_SID
　　ORACLE_TERM=xterm; export ORACLE_TERM
　　PATH=/usr/sbin:$PATH; export PATH
　　PATH=$ORACLE_HOME/bin:$PATH; export PATH
　　export DATE=$(date +%Y_%m_%d)
　　export NLS_LANG="Simplified Chinese_china".AL32UTF8
　　/u01/app/oracle/product/11.2.0/dbhome_1/bin/rman target sys/sys_admin cmdfile /home/oracle/rmanbak/script/db_bak1.rman log /home/oracle/rmanbak/script/log/rman_$DATE.log append
　　三、2级备份（从0级追加到现在的备份）
　　[oracle@oracle122 script]$ cat db_bak2.rman
　　run
　　{
　　configure retention policy to recovery window of 8 days;
　　configure controlfile autobackup on;
　　configure controlfile autobackup format for device type disk to '/home/oracle/rmanbak/%F';
　　allocate channel ch1 device type disk format '/home/oracle/rmanbak/inc2_%d_%s_%p_%u_%T';
　　backup incremental level 2 tag='level 2' database skip inaccessible filesperset 10 plus archivelog filesperset 20 delete all input;
　　release channel ch1;
　　}
　　allocate channel for maintenance device type disk;
　　crosscheck backup;
　　delete noprompt expired backup;
　　delete noprompt obsolete;
　　2级运行脚本
　　[oracle@oracle122 script]$ cat exec_2_level.sh
　　ORACLE_HOSTNAME=oracle122; export ORACLE_HOSTNAME
　　ORACLE_BASE=/u01/app; export ORACLE_BASE
　　ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1; export ORACLE_HOME
　　ORACLE_SID=orcl; export ORACLE_SID
　　ORACLE_TERM=xterm; export ORACLE_TERM
　　PATH=/usr/sbin:$PATH; export PATH
　　PATH=$ORACLE_HOME/bin:$PATH; export PATH
　　export DATE=$(date +%Y_%m_%d)
　　export NLS_LANG="Simplified Chinese_china".AL32UTF8
　　/u01/app/oracle/product/11.2.0/dbhome_1/bin/rman target sys/sys_admin cmdfile /home/oracle/rmanbak/script/db_bak2.rman log /home/oracle/rmanbak/script/log/rman_$DATE.log append
　　定时备份星期天为0级全备，星期三为2级备份，星期一，星期二，星期四，星期五，星期六为1级增量备份晚上11点开始备份
　　[oracle@oracle122 script]$ crontab -l
　　* 23 * * 0 /home/oracle/rmanbak/script/exec_0_level.sh
　　* 23 * * 1 /home/oracle/rmanbak/script/exec_1_level.sh
　　* 23 * * 2 /home/oracle/rmanbak/script/exec_1_level.sh
　　* 23 * * 3 /home/oracle/rmanbak/script/exec_2_level.sh
　　* 23 * * 4 /home/oracle/rmanbak/script/exec_1_level.sh
　　* 23 * * 5 /home/oracle/rmanbak/script/exec_1_level.sh
　　* 23 * * 6 /home/oracle/rmanbak/script/exec_1_level.sh

期待看到有用的回答！