问题现象：
RMAN> 2> 3> 4> 5> 6> 7> 8> 9> 10> 11> 12> 13> 14> 15> 16> 17> 18> 19> 20> 21> 22> 23> 24>
using target database control file instead of recovery catalog
allocated channel: ch01
channel ch01: SID=1513 device type=SBT_TAPE
channel ch01: NMDA Oracle v19.8.0.1
allocated channel: ch02
channel ch02: SID=1549 device type=SBT_TAPE
channel ch02: NMDA Oracle v19.8.0.1
allocated channel: ch03
channel ch03: SID=1585 device type=SBT_TAPE
channel ch03: NMDA Oracle v19.8.0.1
allocated channel: ch04
channel ch04: SID=1621 device type=SBT_TAPE
channel ch04: NMDA Oracle v19.8.0.1
allocated channel: ch05
channel ch05: SID=1657 device type=SBT_TAPE
channel ch05: NMDA Oracle v19.8.0.1
allocated channel: ch06
channel ch06: SID=1693 device type=SBT_TAPE
channel ch06: NMDA Oracle v19.8.0.1
allocated channel: ch07
channel ch07: SID=1729 device type=SBT_TAPE
channel ch07: NMDA Oracle v19.8.0.1
allocated channel: ch08
channel ch08: SID=1765 device type=SBT_TAPE
channel ch08: NMDA Oracle v19.8.0.1
sql statement: alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss"
released channel: ch01
released channel: ch02
released channel: ch03
released channel: ch04
released channel: ch05
released channel: ch06
released channel: ch07
released channel: ch08
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of send command at 04/09/2024 08:50:44
ORA-19559: error sending device command: NB_ORA_CLIENT=ebsdevtest
ORA-19557: device error, device type: SBT_TAPE, device name:
ORA-27194: skgfdvcmd: sbtcommand returned error
ORA-19511: Error received from media manager layer, error text:
sbtcommand: Unable to obtain the server parameter. (100:111:2)
解决排查步骤：
1. 检查netbackup状态是否正常
root 6992 65497 0 09:13 pts/1 00:00:00 grep --color=auto netbackup
root 11755 1 0 Apr07 ? 00:00:01 /usr/openv/netbackup/bin/vnetd -proxy inbound_proxy -number 0
root 11756 1 0 Apr07 ? 00:00:02 /usr/openv/netbackup/bin/vnetd -proxy outbound_proxy -number 0
root 11814 1 0 Apr07 ? 00:00:09 /usr/openv/netbackup/bin/vnetd -standalone
root 11819 1 0 Apr07 ? 00:00:02 /usr/openv/netbackup/bin/bpcd -standalone
root 11907 1 0 Apr07 ? 00:00:11 /usr/openv/netbackup/bin/nbdisco
2. 由于之前安装过Dell Networker客户端，检查是否存在，如果存在卸载
rpm -qa | grep lgto
lgtonmda-19.8.0.1-1.x86_64
lgtoclnt-19.8.0.1-1.x86_64
卸载后依然存在问题
3. 可能是NBU跟oracle lib库关联异常(该环境oracle是拷贝过来）
[oraprod@testdb bin]$ pwd
/usr/openv/netbackup/bin
[oraprod@testdb bin]$ ls oracle_link
oracle_link
[oracle@testdb bin]$ ./oracle_link
All Oracle instances should be shutdown before running this script.
Please log into the Unix system as the Oracle owner for running this script
Do you want to continue? (y/n) [n] y
LIBOBK path: /usr/openv/netbackup/bin
ORACLE_HOME: /u01/app/oracle/product/11.2.0/db_1
Oracle version: 11.2.0.4.0
Platform type: x86_64
Linking LIBOBK:
ln -s /usr/openv/netbackup/bin/libobk.so64 /u01/app/oracle/product/11.2.0/db_1/lib/libobk.so
Done
重新执行恢复，成功恢复