Summary of Oracle10g listener there are many reasons why Oracle 10g listener cannot be started. In this article, we will summarize the causes for listener failure, next let's take a look at this part. 1. ora-01034: Oracle not available, ora-27101: shared mermory realm does not exist. solution: www.2cto.com Method 1: 1. input: connect/as sysdba; 2. restart the computer. Method 2: Enter the following command in the command line: 1. c:> svrmgrl 2. oracle Server Manager Release 3.1.7.0.0-Production 3. copyright (c) 2000, Oracle Corporation. tbAll Rights Reserved. 4. oracle8i Enterprise Edition Release 8.1.7.0.0-Production 5. with the Partitioning o Ption 6. JServer Release 8.1.7.0.0-Production 7. www.2cto.com 8. SVRMGR> connect internal/oracle 9. The connection is successful. Www.2cto.com 10. 11. SVRMGR> startup 12. It should be okay to connect to the database again. 2. Oracle Listener cannot be started suddenly, and the error code is 1067. Solution: Enter dos input lsnrctl start to wait for the display result. My results are as follows: start tnslsnr: Please wait... TNSLSNR for 32-bit Windows: Version 9.2.0.1.0-Production the system parameter file is E: oracleora92networkadminlistener. ora writes E: oracleora92networkloglistener. an error occurred while listening to the object with log information: (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 123.118.1.39) (PORT = 1521 ))). TNS-12545: the connection failed because the target host or object does not exist. TNS-12560: TNS: protocol adapter error. TNS-00515: the connection failed because the target host or object does not exist. 32-bit Windows Error: 49: Unknown error. The Listener failed to start. See the error message above... Www.2cto.com. Method 1: the IP address can be modified. Method 2: modify the configuration of the E: oracleora92networkadminlistener. ora file. 3. The AGENT service cannot be started. You can delete the files in the networkagent directory. Q,. ver and other files, and then re-agentctl start. If sqlnet. ora is incorrect, check the content of sqlnet. ora. 1. # SQLNET. ORA Network Configuration file: D: oracleora92networkadminsqlnet. ora 2. # Generated by Oracle configuration tools. 3. SQLNET. AUTHENTICATION_SERVICES = (ETS) 4. NAMES. DIRECTORY_PATH = (TNSNAMES, ONAMES, HOSTNAME) sqlnet. ora name 1. # NAMES. PREFERRED_SERVERS = www.2cto.com 2. # (ADDRESS_LIST = 3. # (ADDRESS = (PROTOCOL = TCP) (HOST = MICROSOF-3D9384) (PORT = 1575) 4. #) 4. oracle http Server cannot start the site that uses port 80 in IIS, or you can change the Http Server port of Oracle. Here is a summary of the error solution that Oracle 10g listening listener cannot be started. I hope this introduction will be helpful to you!