<p>In Oracle databases, ORA errors can be checked by viewing database log files and using SQL statements.</p><p>1. View database log files: In the installation directory of the Oracle database, there is a log file called alert_database instance name. log. You can use a text editor (such as Notepad++) to open the file and search for lines containing ORA errors.</p><p>2. Use SQL statements to query error information: The following two system views can be used to query ORA error information:</p><p>V $DIAG.INFO: This view contains the current log file path and name of the database.</p><p>V $DIAGINGIDENT: This view contains diagnostic events and error information for the database.</p><p>You can use the following SQL statements to query ORA error information:</p><div class="pre-wrapper" style="margin: 8px 0px; padding: 0px; box-sizing: border-box; position: relative; color: rgb(94, 109, 129); font-family: "Microsoft YaHei", Helvetica, "Meiryo UI", "Malgun Gothic", "Segoe UI", "Trebuchet MS", Monaco, monospace, Tahoma, STXihei, 华文细黑, STHeiti, "Helvetica Neue", "Droid Sans", "wenquanyi micro hei", FreeSans, Arimo, Arial, SimSun, 宋体, Heiti, 黑体, sans-serif; text-wrap: wrap; background-color: rgb(255, 255, 255);"><pre class="hljs sql" data-copyid="1" style="margin-top: 8px; margin-bottom: 8px; padding: 15px; box-sizing: border-box; overflow: auto; background-color: rgb(240, 242, 245); color: rgb(45, 48, 55); font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 14px; line-height: 1.6; font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace; border-radius: 4px; overflow-wrap: break-word; text-wrap: wrap; word-break: break-all;">SELECT * FROM V$DIAG_INFO;SELECT * FROM V$DIAG_INCIDENT;</pre><button class="copy-code" copytarget="1" style="margin: 0px; padding: 0px 8px; position: absolute; top: 2px; right: 8px; height: 24px; line-height: 24px; font-size: 12px; color: rgb(158, 167, 179); background: rgb(240, 242, 245); border-radius: 4px; outline: none; border-width: initial; border-style: none; border-color: initial; cursor: pointer; opacity: 0;">复制代码</button></div><p>These queries will return error information about the database, including error codes (ORA-XXXXXX) and error descriptions.</p><p>Additionally, Oracle database management tools such as SQL * Plus or PL/SQL Developer can be used to perform queries and view error messages.</p><p><br/></p>
