db2icrt 报SQL1042C错误码

问题: 安装DB2软件后,不能正常创建实例,报SQL1042C错误码

cd /opt/ibm/db2/V9.1/instance
./db2icrt -u db2inst1 db2inst1

报错信息:
Instance home dir = /home/db2inst1,   Sysadm group = db2grp1
Instance type = 3,  Auth type = SERVER

SQL1042C  An unexpected system error occurred.
Update DBM cfg SYSADM_GROUP errcode = 8
DBI1281E The database manager configuration file could not be
          initialized. 
         
       
处理过程:
1.检查hostsname是否配置正确,确认/etc/hosts ,hostname等
2.PATH路径设置是否有问题,检查 env输出,发现在/etc/profile中配置了LD_LIBRARY_PATH,DB2_HOME等环境变量,取消后重新建立实例正常