2013年4月5日 · Oracle SID is the unique name that uniquely identifies your instance/database where as Service name is the TNS alias that you give when you remotely connect to your database and this Service name is recorded in Tnsnames.ora file on your clients and it can be the same as SID and you can also give it any other name you want.

2008年8月13日 · For the person who mentioned the TWO_TASK environment variable, that is used to set a default database service name to connect to (which could be a database on another server). The service name you set TWO_TASK to is then looked up …

2017年9月27日 · There is no tnsnames.ora file listing command. But there are several options where the tnsnames.ora file can be placed.

2013年1月7日 · If you are using thin driver, ensure that your ojdbcX.jar file is in your build path. The steps to connect to Oracle data source using TNS Alias name are: Set System Property for oracle.net.tns_admin. This should point to the directory which has your tnsnames.ORA file. System.setProperty("oracle.net.tns_admin", DIRECTORY_PATH_TO_TNSNAME.ORA_FILE);

basically it rounds to setting TNS_ADMIN system variable (because SQL Developer searches there ~ first) and, after restarting SQL Developer, choosing New Connection, and in Connection Type dropdown list, instead of Basic, choosing TNS - so - tnsnames is seen alright, but you shouldn't expect the connections to be populated automatically (that ...

2008年9月4日 · SERVICE_NAME is the new feature from oracle 8i onwards in which database can register itself with listener. If database is registered with listener in this way then you can use SERVICE_NAME parameter in tnsnames.ora otherwise - use SID in tnsnames.ora. Also if you have OPS (RAC) you will have different SERVICE_NAME for each instance.

2012年7月11日 · However, I'm not sure TNS PING will help yet because it seems to be an issue regarding Environment Paths and ODBC being able to locate the .ora file. TNSNAMES.ORA Location. TNS_Admin = E:\app\[username]\product\11.2.0\client_1\network\admin\TNSNAMES.ora. Environment …

2015年11月25日 · Unable to connect SQL State=S1000 [Oracle][ODBC][Ora] ORA-12170: TNS: Connect timeout occurred I presume, though I am no DBA, that this has something to do with my TNS Service Name not being in TNSNAMES.ORA which points oracle toward the right server, port, etc. However I cannot find TNSNAMES.ORA

2016年12月29日 · With the space removed it looks for HOST as a TNS alias: C:\>sqlplus -l -s x/y@HOST ERROR: ORA-12154: TNS:could not resolve the connect identifier specified SP2-0751: Unable to connect to Oracle. Exiting SQL*Plus

Define an environmental variable called TNS_ADMIN to point to the folder that contains your tnsnames.ora file. In Windows, this is done by navigating to Control Panel > System > Advanced system settings > Environment Variables...