{"id":203,"date":"2026-01-23T06:12:23","date_gmt":"2026-01-23T06:12:23","guid":{"rendered":"https:\/\/blog.gpst.net.cn:4008\/?p=203"},"modified":"2026-01-28T06:24:15","modified_gmt":"2026-01-28T06:24:15","slug":"oracle%e8%bf%90%e7%bb%b4-tns-12545%e9%94%99%e8%af%af%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/opshub.com.cn\/?p=203","title":{"rendered":"oracle\u8fd0\u7ef4\u2014\u2014TNS-12545\u9519\u8bef\u5904\u7406"},"content":{"rendered":"\n

TNS-12545: Connect failed because target host or object does not exist<\/p>\n\n\n\n

TNS-12545<\/code> \u9519\u8bef\u662f Oracle \u6570\u636e\u5e93\u8fde\u63a5\u4e2d\u975e\u5e38\u5e38\u89c1\u7684\u7f51\u7edc\u9519\u8bef\uff0c\u6838\u5fc3\u542b\u4e49\u662f\u5ba2\u6237\u7aef\u65e0\u6cd5\u627e\u5230\u6307\u5b9a\u7684\u76ee\u6807\u4e3b\u673a\u6216\u6570\u636e\u5e93\u670d\u52a1\u5bf9\u8c61\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f \u201c\u8fde\u4e0d\u4e0a\u76ee\u6807\u5730\u5740 \/ \u670d\u52a1\u201d<\/p>\n\n\n\n

1\u3001\u57fa\u7840\u8fde\u901a\u6027\u6392\u67e5<\/p>\n\n\n\n

# 1. \u6d4b\u8bd5\u4e3b\u673a\u662f\u5426\u53ef\u8fbe\uff08\u66ff\u6362\u4e3a\u4f60\u7684\u6570\u636e\u5e93\u670d\u52a1\u5668IP\/\u4e3b\u673a\u540d\uff09\nping 192.168.1.100\n\n# 2. \u6d4b\u8bd5Oracle\u76d1\u542c\u7aef\u53e3\u662f\u5426\u5f00\u653e\uff08\u9ed8\u8ba41521\uff0c\u66ff\u6362\u4e3a\u5b9e\u9645\u7aef\u53e3\uff09\ntelnet 192.168.1.100 1521\n# \u6216\u66f4\u73b0\u4ee3\u7684\u65b9\u5f0f\uff08Linux\/macOS\uff09\nnc -zv 192.168.1.100 1521<\/code><\/pre>\n\n\n\n
2\u3001\u68c0\u67e5 TNS \u914d\u7f6e\u6587\u4ef6\uff08tnsnames.ora\uff09<\/p>\n\n\n\n
\u8def\u5f84\u901a\u5e38\u4e3a\uff1a<\/p>\n\n\n\n
Windows: %ORACLE_HOME%\\network\\admin\\tnsnames.ora<\/code> Linux\/macOS: $ORACLE_HOME\/network\/admin\/tnsnames.ora<\/code><\/p>\n\n\n\n
\u5e38\u89c1\u51fa\u9519\u70b9\uff1a<\/p>\n\n\n\n
HOST<\/code> \u5b57\u6bb5\u586b\u9519\uff1a\u6bd4\u5982\u7528\u4e86\u9519\u8bef\u7684 IP\u3001\u4e3b\u673a\u540d\uff08\u6216\u4e3b\u673a\u540d\u65e0\u6cd5\u89e3\u6790\uff09<\/p>\n\n\n\n
PORT<\/code> \u5b57\u6bb5\u9519\u8bef\uff1a\u4e0d\u662f\u6570\u636e\u5e93\u76d1\u542c\u7684\u5b9e\u9645\u7aef\u53e3\uff08\u9ed8\u8ba4 1521\uff0c\u53ef\u80fd\u88ab\u4fee\u6539\uff09<\/p>\n\n\n\n
SERVICE_NAME<\/code> \u9519\u8bef\uff1a\u9700\u548c\u6570\u636e\u5e93\u7aef\u4e00\u81f4\uff0c\u53ef\u5728\u6570\u636e\u5e93\u670d\u52a1\u5668\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u786e\u8ba4\uff1a<\/p>\n\n\n\n
-- \u5728\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e0a\u4ee5sysdba\u8eab\u4efd\u6267\u884c\nSELECT name, value FROM v$parameter WHERE name IN ('service_names', 'instance_name');<\/code><\/pre>\n\n\n\n
ORCL =  # \u670d\u52a1\u540d\uff08\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6\u7528\u7684\u540d\u79f0\uff09\n  (DESCRIPTION =\n    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.100)(PORT = 1521))  # \u6838\u5fc3\uff1aIP\/\u4e3b\u673a\u540d+\u7aef\u53e3\n    (CONNECT_DATA =\n      (SERVER = DEDICATED)\n      (SERVICE_NAME = orcl)  # \u5fc5\u987b\u548c\u6570\u636e\u5e93\u5b9e\u9645\u7684SERVICE_NAME\u4e00\u81f4\uff08\u4e0d\u662fSID\uff09\n    )\n  )<\/code><\/pre>\n\n\n\n
3\u3001\u68c0\u67e5\u6570\u636e\u5e93\u76d1\u542c\u72b6\u6001\uff08Listener\uff09<\/p>\n\n\n\n
# \u5728\u6570\u636e\u5e93\u670d\u52a1\u5668\u6267\u884c\uff1a\n# 1. \u67e5\u770b\u76d1\u542c\u72b6\u6001\nlsnrctl status\n\n# 2. \u5982\u679c\u76d1\u542c\u672a\u542f\u52a8\uff0c\u542f\u52a8\u76d1\u542c\nlsnrctl start\n\n# 3. \u67e5\u770b\u76d1\u542c\u914d\u7f6e\uff08listener.ora\uff09\n# \u8def\u5f84\uff1a$ORACLE_HOME\/network\/admin\/listener.ora<\/code><\/pre>\n\n\n\n
4\u3001\u4e34\u65f6\u6d4b\u8bd5\uff1a\u8df3\u8fc7 TNS \u914d\u7f6e\u76f4\u63a5\u8fde\u63a5<\/p>\n\n\n\n
\u5982\u679c\u60f3\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\uff0c\u53ef\u7ed5\u8fc7 tnsnames.ora<\/code>\uff0c\u76f4\u63a5\u7528 EZCONNECT \u65b9\u5f0f\u8fde\u63a5\uff08Oracle 10g + \u652f\u6301\uff09\uff1a<\/p>\n\n\n\n
\u5982\u679c\u8fd9\u4e2a\u547d\u4ee4\u80fd\u8fde\u63a5\u6210\u529f\uff1a\u8bf4\u660e\u95ee\u9898\u51fa\u5728 tnsnames.ora<\/code> \u914d\u7f6e\u3002 \u5982\u679c\u4ecd\u5931\u8d25\uff1a\u8bf4\u660e\u7f51\u7edc \/ \u76d1\u542c \/ \u6570\u636e\u5e93\u670d\u52a1\u540d\u5b58\u5728\u95ee\u9898\u3002<\/p>\n\n\n\n
# \u683c\u5f0f\uff1asqlplus \u7528\u6237\u540d\/\u5bc6\u7801@\u4e3b\u673aIP:\u7aef\u53e3\/SERVICE_NAME\nsqlplus scott\/tiger@192.168.1.100:1521\/orcl<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
TNS-12545: Connect failed because target host or object does not exist TNS-12545 \u9519\u8bef\u662f Oracle \u6570\u636e\u5e93\u8fde\u63a5\u4e2d\u975e\u5e38\u5e38\u89c1\u7684\u7f51\u7edc\u9519\u8bef\uff0c\u6838\u5fc3\u542b\u4e49\u662f\u5ba2\u6237\u7aef\u65e0\u6cd5\u627e\u5230\u6307\u5b9a\u7684\u76ee\u6807\u4e3b\u673a\u6216\u6570\u636e\u5e93\u670d\u52a1\u5bf9\u8c61\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f \u201c\u8fde\u4e0d\u4e0a\u76ee\u6807\u5730\u5740 \/ \u670d\u52a1\u201d 1\u3001\u57fa\u7840\u8fde\u901a\u6027\u6392\u67e5 2\u3001\u68c0\u67e5 TNS \u914d\u7f6e\u6587\u4ef6\uff08tnsnames.ora\uff09 \u8def\u5f84\u901a\u5e38\u4e3a\uff1a Windows: %ORACLE_HOME%\\network\\admin\\tnsnames.ora Linux\/macOS: $ORACLE_HOME\/network\/admin\/tnsnames.ora \u5e38\u89c1\u51fa\u9519\u70b9\uff1a HOST \u5b57\u6bb5\u586b\u9519\uff1a\u6bd4\u5982\u7528\u4e86\u9519\u8bef\u7684 IP\u3001\u4e3b\u673a\u540d\uff08\u6216\u4e3b\u673a\u540d\u65e0\u6cd5\u89e3\u6790\uff09 PORT \u5b57\u6bb5\u9519\u8bef\uff1a\u4e0d\u662f\u6570\u636e\u5e93\u76d1\u542c\u7684\u5b9e\u9645\u7aef\u53e3\uff08\u9ed8\u8ba4 1521\uff0c\u53ef\u80fd\u88ab\u4fee\u6539\uff09 SERVICE_NAME \u9519\u8bef\uff1a\u9700\u548c\u6570\u636e\u5e93\u7aef\u4e00\u81f4\uff0c\u53ef\u5728\u6570\u636e\u5e93\u670d\u52a1\u5668\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u786e\u8ba4\uff1a 3\u3001\u68c0\u67e5\u6570\u636e\u5e93\u76d1\u542c\u72b6\u6001\uff08Listener\uff09 4\u3001\u4e34\u65f6\u6d4b\u8bd5\uff1a\u8df3\u8fc7 TNS \u914d\u7f6e\u76f4\u63a5\u8fde\u63a5 \u5982\u679c\u60f3\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\uff0c\u53ef\u7ed5\u8fc7 tnsnames.ora\uff0c\u76f4\u63a5\u7528 EZCONNECT \u65b9\u5f0f\u8fde\u63a5\uff08Oracle 10g + \u652f\u6301\uff09\uff1a \u5982\u679c\u8fd9\u4e2a\u547d\u4ee4\u80fd\u8fde\u63a5\u6210\u529f\uff1a\u8bf4\u660e\u95ee\u9898\u51fa\u5728 tnsnames.ora \u914d\u7f6e\u3002 \u5982\u679c\u4ecd\u5931\u8d25\uff1a\u8bf4\u660e\u7f51\u7edc \/ \u76d1\u542c \/ \u6570\u636e\u5e93\u670d\u52a1\u540d\u5b58\u5728\u95ee\u9898\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-203","post","type-post","status-publish","format-standard","hentry","category-8"],"_links":{"self":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=203"}],"version-history":[{"count":1,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/203\/revisions"}],"predecessor-version":[{"id":204,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/203\/revisions\/204"}],"wp:attachment":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}