NBU在备份一台AIX服务器上的DB2数据库时，报6号错误。
报错截图:
AIX服务器上具体报错信息如下：
Executing: db2 BACKUP DATABASE BJMOA4 ONLINE LOAD /usr/openv/netbackup/bin/nbdb2.sl64 OPEN 4 SESSIONS BUFFER 1024
SQL2071N An error occurred while accessing the shared library
"/usr/openv/netbackup/bin/nbdb2.sl64". Reason code: "2".
一、分析检查
1、检查SQL2071N
$ db2 ? SQL2071N
SQL2071N An error occurred while accessing the shared library
"<shr-lib-name>". Reason code: "<reason-code>"
Explanation:
An unexpected error occurred while accessing a vendor shared
library during the processing of a database utility. The
following is a list of reason codes:
1 An invalid shared library path was encountered.
2 An attempt to load the backup shared library failed.
3 An error was encountered while unloading the shared library.
The utility stops processing.
User Response:
Ensure the shared library provided is valid and resubmit the
utility command or use another supported media.
2、分析共享库的载入
# ldd /usr/openv/netbackup/bin/nbdb2.sl64
/usr/openv/netbackup/bin/nbdb2.sl64 needs:
/usr/openv/lib/libxbsa64.so
/usr/openv/lib/libVcvcomb64_noul.so
/usr/lib/libc.a(shr_64.o)
/usr/lib/libdl.a(shr_64.o)
/unix
/usr/lib/libcrypt.a(shr_64.o)
使用LDD命令可显示所依赖的动态连接库的尽可能的详细信息
根据提示去检查列出的文件是否都存在，服务器空间，香港虚拟主机，如果不存在可以从其他正常可备份的机器上拷贝。
3、分析CODE 2
#cat /usr/include/sys/errno.h
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Arg list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file descriptor */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Resource temporarily unavailable */
#define ENOMEM 12 /* Not enough space */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
根据提示，可推断没有找到相关文件或路径不正确
4、分析DB2diag.log文件
DATA #3 : String, 265 bytes
0509-022 Cannot load module /usr/openv/netbackup/bin/nbdb2.sl64(shr.o).
0509-153 File /usr/openv/netbackup/bin/nbdb2.sl64 is not an archive or
the file could not be read properly.
FUNCTION: DB2 UDB, database utilities, sqlubcka, probe:140
MESSAGE : Backup Terminated.
根据以上的分析，可确知归档目录读取不正确
5、检查当前数据库是否开启归档
$ db2 get db cfg for bjtt4|grep -i log
Log retain for recovery enabled (LOGRETAIN) = RECOVERY
User exit for logging enabled (USEREXIT) = OFF
HADR log write synchronization mode (HADR_SYNCMODE) = NEARSYNC
First log archive method (LOGARCHMETH1) = LOGRETAIN
发现设置了归档，但归档目录没指定
二、解决问题
$db2 update db cfg for bjtt4 using LOGARCHMETH1 "disk:/archive/db2log"
运行后结果如下：
关于爱情的句子：情不知所起，一往而情深。
