Elimination of Oracle build errors

An Oracle library error was excluded and the following process could not be assigned a port resolution within the specified scope

Install the Oracle database a few days ago. Follow the instructions to configure the Linux environment, install the RPM, and then install the 10.2.0.1 installation package, and then install the 10.2.0.4 patch, and finally play em patch. It's all right. I started to create the database with DBCA, and the result reported the following error:

1

Critical: Unable to allocate port for the following process within the specified range: JMS [5540-5559],rmi [5520-5539],database control [5500-5519],em Agent [3938] | [1830-1849]

2

For more information, see the log files in/home/oracle/app/oracle/product/10.2.0/db_1/cfgtoollogs/dbca/orcl/emconfig.log.

Fainted, the first time encountered this situation. Through the Netstat toss a half-day port, did not find the problem, the whole system new installation does not use 5000 this port segment of the program.

And to search the Internet to find the answer, the results are all because EMCA configuration error, but I follow the online write EMCA instructions to delete the configuration are the error. In addition, it is found that not only the EM creation failed, the execution lsnrctl status, the listener is also wrong. Host here is incredibly empty, and the status itself can not stop. So suspicion has nothing to do with EM, but an earlier question.

I'm done. One configuration file is compared to the installation manual and the other installed server. Finally found that the new installation of the Linux server hosts have problems, 127.0.0.1 in addition to the corresponding localhost, there is no corresponding server host name.

After modifying the Hosts file, rerun DBCA succeeded.

This time the installation database was misled by logs and information on the web. Special here to share, I hope everyone in the installation of Oracle time less detours.