我有一个文档管理系统，它是一个Tomcat servlet，具有单独的config.xml。DMS系统需要一个数据库才能正常工作。在本例中是Oracle 19c。出于安全原因，我希望加密Tomcat和Oracle之间的连接。为此，我在Oracle 19c下通过orapki创建了一个带有自签名证书的Wallet。之后，listener. ora、sqlnet.ora和tnsname.ora进行了相应的调整。在servlet的config.xml中，我将连接字符串更改为TNS。通过TCP，我正确地获得了到Oracle服务器的连接。根据标题，通过TCP显示错误消息。
通过SQLplus我可以正确地通过TCP建立连接。这里还有什么地方会出错呢？
我的环境：

Server1:
     Linux Oracle Server 7.8
     Oracle 19c
     Hostname: oracleserver.localdomain
Server2:
    Windows Server 2022 Datacenter
    Apache Tomcat 9.0.37
    OpenJDK 15.0.1+9-18
    Hostname elo

Oracle服务器中的ORA-Files：
listener.ora

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = oracleserver.localdomain)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCPS)(HOST = oracleserver.localdomain)(PORT = 2484))
    )
  )

WALLET_LOCATION = 
   (SOURCE =
     (METHOD = FILE)
     (METHOD_DATA =
       (DIRECTORY = /u01/app/oracle/product/19.0.0/dbhome_1/wallets/server_wallet)
     )
   )
 
SSL_CLIENT_AUTHENTICATION = FALSE

SQLnet.ora

SQLNET.AUTHENTICATION_SERVICES = (BEQ,TCPS)

NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)

WALLET_LOCATION = 
   (SOURCE =
     (METHOD = FILE)
     (METHOD_DATA =
       (DIRECTORY = /u01/app/oracle/product/19.0.0/dbhome_1/wallets/server_wallet)
     )
   )
 
SSL_CLIENT_AUTHENTICATION = FALSE

tnsnames.ora

LISTENER =
  (ADDRESS = (PROTOCOL = TCP)(HOST = oracleserver.localdomain)(PORT = 1521))
  (ADDRESS = (PROTOCOL = TCPS)(HOST = oracleserver.localdomain)(PORT = 2484))

ELO =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = oracleserver.localdomain)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = elo)
    )
  )

ELOPDB =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCPS)(HOST = oracleserver.localdomain)(PORT = 2484))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = elopdb)
    )
  )

对于Apache Tomcat，我设置了以下Java选项：

-Djava.net.preferIPv4Stack=true
-Doracle.net.ssl_cipher_suites=SSL_DH_anon_WITH_3DES_EDE_CBC_SHA, SSL_DH_anon_WITH_ C4_128_MD5, SSL_DH_anon_WITH_DES_CBC_SHA

我的JDBC连接字符串：

jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL=TCPS)(HOST=oracleserver)(PORT=2484)))(CONNECT_DATA=(SERVICE_NAME=ELOPDB)(SERVER=DEDICATED)))

确切的错误消息：

19:45:25.690 WARN  eloix-init-2 init-2 (DBConnection.java:486)                  - Could not establish connection using jdbcurl=jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(ADDRESS =(PROTOCOL=TCPS)(HOST=oracleserver)(PORT=2484)))(CONNECT_DATA=(SERVICE_NAME=ELOPDB)(SERVER=DEDICATED))), I/O-Fehler: The Network Adapter could not establish the connection
19:45:25.695 WARN  eloix-init-2 init-2 (IXServlet$InitThread.java:539)          - Initialization error, retry after 10s
java.sql.SQLException: java.sql.SQLException: Cannot get connection from Driver Manager. DB[1] Command=""
    at de.elo.ix.db.DBConnection.throwException(DBConnection.java:175)
    at de.elo.ix.db.DBConnection.internalConnect(DBConnection.java:583)
    at de.elo.ix.db.DBConnection.connect(DBConnection.java:357)
    at de.elo.ix.data.DBFactory.createAndConnect(DBFactory.java:14)
    at de.elo.ix.exec.ServerObject.init(ServerObject.java:1138)
    at de.elo.ix.exec.ServerObjectHolderImpl.init(ServerObjectHolderImpl.java:47)
    at de.elo.ix.IXServlet$InitThread.run(IXServlet.java:521)
Caused by: java.sql.SQLException: Cannot get connection from Driver Manager.
    at de.elo.ix.db.DBConnection.internalConnect(DBConnection.java:551)
    ... 5 common frames omitted

我希望你能看到我的错误...
作为一个可能的解决方案，我已经在Windows服务器上安装了Oracle客户端工具，并检查了别名作为连接字符串的规范。不幸的是，同样的错误。通过TCP的SQL Plus连接工作正常。还有openssl s_client-connect oracleserver：2484。
此外，我还将以下参数作为Java选项进行了检查，但不幸的是，结果相同

-Doracle.net.wallet_location=D:\App\Oracle\product\19.3.0\dbhome_1\network\admin
-Doracle.net.tns_admin=D:\App\Oracle\product\19.3.0\dbhome_1\network\admin