成功安装SAP HANA
后,我可以看到sapstartsrv
进程运行:
# ps -ef | grep sapstartsrv
xn1adm 2143 1 0 Mar29 ? 00:00:05 /usr/sap/XN1/HDB00/exe/sapstartsrv pf=/home/hana/shared/XN1/profile/XN1_HDB00_dhe2 -D -u xn1adm
但是在使用ldd
命令检查sapstartsrv
动态链接库之后:
# ldd /usr/sap/XN1/HDB00/exe/sapstartsrv
linux-vdso.so.1 (0x00007ffd35a30000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fd1fe6b3000)
librt.so.1 => /lib64/librt.so.1 (0x00007fd1fe4ab000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fd1fe270000)
libpam.so.0 => /lib64/libpam.so.0 (0x00007fd1fe061000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007fd1fde5e000)
libuuid.so.1 => /usr/lib64/libuuid.so.1 (0x00007fd1fdc59000)
libsapnwrfccm.so => not found
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007fd1fd8d7000)
libm.so.6 => /lib64/libm.so.6 (0x00007fd1fd5d6000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fd1fd3bf000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fd1fd1a2000)
libc.so.6 => /lib64/libc.so.6 (0x00007fd1fcdfb000)
/lib64/ld-linux-x86-64.so.2 (0x00007fd1fe8b7000)
libaudit.so.1 => /usr/lib64/libaudit.so.1 (0x00007fd1fcbd8000)
我可以看到找不到libsapnwrfccm.so
。但是为什么sapstartsrv
程序可以在找不到动态库的情况下运行?
答案 0 :(得分:1)
因为某些东西通过将链接器指向包含该库的目录来启动该程序。通常这是我设置环境变量LD_LIBRARY_PATH
。例如:
LD_LIBRARY_PATH=/look/here/for/libs program
现在,运行时链接程序还会查找/look/here/for/libs
以查找依赖于库program
的库。