ORA-00604：递归SQL级别1发生错误

Question

我开始了解以下内容SQL exception，但我不知道此异常的根本原因是什么？我也关dbconnection和prepared statement太。那是什么问题

java.sql.SQLException: ORA-00604: error occurred at recursive SQL level 1
ORA-01000: maximum open cursors exceeded
ORA-00604: error occurred at recursive SQL level 1
ORA-01000: maximum open cursors exceeded
ORA-01000: maximum open cursors exceeded

以下是我正在使用的代码。我的代码有什么问题吗？

for (Entry<Integer, LinkedHashMap<Integer, String>> entry : GUID_ID_MAPPING.entrySet()) {

    pstatement = db_connection.prepareStatement(PDSLnPConstants.UPSERT_SQL); // create a statement
    pstatement.setInt(1, entry.getKey());
    pstatement.setString(2, entry.getValue().get(PDSLnPConstants.CGUID_ID));
    pstatement.setString(3, entry.getValue().get(PDSLnPConstants.PGUID_ID));
    pstatement.setString(4, entry.getValue().get(PDSLnPConstants.SGUID_ID));
    pstatement.setString(5, entry.getValue().get(PDSLnPConstants.UID_ID));
    pstatement.setString(6, entry.getValue().get(PDSLnPConstants.ULOC_ID));
    pstatement.setString(7, entry.getValue().get(PDSLnPConstants.SLOC_ID));
    pstatement.setString(8, entry.getValue().get(PDSLnPConstants.PLOC_ID));
    pstatement.setString(9, entry.getValue().get(PDSLnPConstants.ALOC_ID));
    pstatement.setString(10, entry.getValue().get(PDSLnPConstants.SITE_ID));
    pstatement.executeUpdate();

    }

} catch (SQLException e) {
    getLogger().log(LogLevel.ERROR, e);
} finally {
    if (pstatement!= null) {
    try {
        pstatement.close();
        pstatement = null;
    } catch (SQLException e) {
        getLogger().log(LogLevel.ERROR, e.getMessage(), e.fillInStackTrace());
    }
    }
    if (db_connection!= null) {
    try {
        db_connection.close();
        db_connection = null;
    } catch (SQLException e) {
        getLogger().log(LogLevel.ERROR, e.getMessage(), e.fillInStackTrace());
    }
    }

Answer 1

我认为PreparedStatement应该通过调用将定义从循环中拉出并在循环内重用clearParameters：

pstatement = db_connection.prepareStatement(PDSLnPConstants.UPSERT_SQL); // create a statement

for (Entry<Integer, LinkedHashMap<Integer, String>> entry : GUID_ID_MAPPING.entrySet()) {

    pstatement.setInt(1, entry.getKey());
    pstatement.setString(2, entry.getValue().get(PDSLnPConstants.CGUID_ID));
    pstatement.setString(3, entry.getValue().get(PDSLnPConstants.PGUID_ID));
    pstatement.setString(4, entry.getValue().get(PDSLnPConstants.SGUID_ID));
    pstatement.setString(5, entry.getValue().get(PDSLnPConstants.UID_ID));
    pstatement.setString(6, entry.getValue().get(PDSLnPConstants.ULOC_ID));
    pstatement.setString(7, entry.getValue().get(PDSLnPConstants.SLOC_ID));
    pstatement.setString(8, entry.getValue().get(PDSLnPConstants.PLOC_ID));
    pstatement.setString(9, entry.getValue().get(PDSLnPConstants.ALOC_ID));
    pstatement.setString(10, entry.getValue().get(PDSLnPConstants.SITE_ID));
    pstatement.executeUpdate();

    pstatement.clearParameters();

}

您可能还想研究批处理（addBatch）。如果要测试，则可能需要稍等片刻以清理现有的“打开”游标。