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【DM版本】:
【操作系统】：
【CPU】:
【问题描述】*：

环境说明：

docker 镜像，dm8_single:v8.1.2.128_ent_x86_64_ctm_pack4
jdbc 驱动，com.dameng jdbc8 1.8 （http://119.96.92.173:8181/service/rest/repository/browse/maven-releases/com/dameng/jdbc8/1.8/）

docker 运行后，重新初始化了实例。操作步骤如下：

修改配置文件需要重新初始化，相关命令如下：
1、停止服务 
ps -ef|grep dmserver
kill 
2、删除实例 
cd /opt/dmdbms/data/
rm -rf ./* 
3、初始化实例 
cd /opt/dmdbms/bin
./dminit path=/opt/dmdbms/data port_num=5236 charset=1 length_in_char=1 blank_pad_mode=1 case_sensitive=0 page_size=16 extent_size=16 

4、启动服务 
cd /opt/dmdbms/bin 
./dmserver /opt/dmdbms/data/DAMENG/dm.ini &

./dmserver /opt/dmdbms/data/DAMENG/dm.ini -noconsole

异常：

驱动包中，dm.jdbc.driver.DmdbDatabaseMetaData 的 do_getDatabaseMinorVersion 方法 出现 java.lang.NumberFormatException: For input string: “” 异常

异常堆栈：

ERROR: Unexpected error
java.lang.NumberFormatException: For input string: ""
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:592)
	at java.lang.Integer.parseInt(Integer.java:615)
	at dm.jdbc.driver.DmdbDatabaseMetaData.do_getDatabaseMinorVersion(DmdbDatabaseMetaData.java:417)
	at dm.jdbc.driver.DmdbDatabaseMetaData.getDatabaseMinorVersion(DmdbDatabaseMetaData.java:8591)
	at org.flywaydb.core.internal.dbsupport.DbSupportFactory.getDatabaseProductName(DbSupportFactory.java:183)
	at org.flywaydb.core.internal.dbsupport.DbSupportFactory.createDbSupport(DbSupportFactory.java:66)
	at org.flywaydb.core.Flyway.execute(Flyway.java:1369)
	at org.flywaydb.core.Flyway.migrate(Flyway.java:930)
	at org.flywaydb.commandline.Main.executeOperation(Main.java:148)
	at org.flywaydb.commandline.Main.main(Main.java:103)

异常源码：

  public String do_getDatabaseProductVersion() {
    DmdbResultSet dmdbResultSet = null;
    try {
      dmdbResultSet = DriverUtil.executeQuery(this.connection, "select top 1 banner, id_code from v$version where banner like 'DM Database Server%'");
      if (dmdbResultSet.next()) {
        String str = String.valueOf(StringUtil.trimToEmpty(dmdbResultSet.getString(1))) + "." + StringUtil.trimToEmpty(dmdbResultSet.getString(2));
        int i = str.indexOf("V");
        str = (i != -1) ? str.substring(i + 1) : str;
        String[] arrayOfString = str.split("-");
        return String.valueOf(arrayOfString[0]) + "." + arrayOfString[1] + "." + arrayOfString[2];
      } 
    } catch (Exception exception) {
      MiscUtil.close(dmdbResultSet);
      try {
        dmdbResultSet = DriverUtil.executeQuery(this.connection, "select top 1 * from v$version where banner like 'DM Database Server%'");
        if (dmdbResultSet.next()) {
          String str = dmdbResultSet.getString(1);
          int i = str.indexOf("-Build");
          str = (i != -1) ? str.substring(0, i) : str;
          int j = str.lastIndexOf("V");
          return (j != -1) ? str.substring(j + 1) : str;
        } 
      } catch (Exception exception1) {}
    } finally {
      MiscUtil.close(dmdbResultSet);
    } 
    return this.connection.do_getClientInfo("serverVersion");
  }

  public int do_getDatabaseMinorVersion() {
    if (this.connection.compatibleOracle())
      return 1; 
    String[] arrayOfString = do_getDatabaseProductVersion().split("\\.");
    return Integer.parseInt(arrayOfString[1]);
  }

异常原因：

select top 1 banner, id_code from v$version where banner like 'DM Database Server%'

LINEID     banner                   id_code
---------- ------------------------ -----------------------------------------
1          DM Database Server 64 V8 --08134283904-20220804-166351-20005 Pack4

代码中，
在 do_getDatabaseProductVersion 经过处理后，返回 8...08134283904 （感觉如此）
导致 do_getDatabaseMinorVersion 中 split 后 拿到了一个 空字符串
最终使得 Integer.parseInt 出现异常