ORA-28860:使用 UTL_HTTP 时出现致命的 SSL 错误?

We are using Oracle 11g (11.2.0.3.0) and we are receiving the following error when executing a UTL_HTTP call:

EXCEPTION: ORA-28860: Fatal SSL error
EXCEPTION: ORA-06512: at "SYS.UTL_HTTP", line 1128
ORA-06512: at line 23

EXCEPTION: ORA-28860: Fatal SSL error

这是我们使用的代码:

DECLARE
  url_chr             VARCHAR2(500);
  user_id_chr         VARCHAR2(100);
  password_chr        VARCHAR2(20);
  wallet_path_chr     VARCHAR2(500);
  wallet_pass_chr     VARCHAR2(20);

  l_http_request      UTL_HTTP.REQ;
  l_http_response     UTL_HTTP.RESP; 
  l_text              VARCHAR2(32767);
BEGIN
  url_chr           := '*****';
  user_id_chr       := '*****';
  password_chr      := '*****';
  wallet_pass_chr   := '*****';
  wallet_path_chr   := 'file:/etc/ORACLE/WALLETS/astens/rtca/cer/';

  UTL_HTTP.SET_DETAILED_EXCP_SUPPORT(TRUE);    

  UTL_HTTP.SET_WALLET(wallet_path_chr, wallet_pass_chr);

  l_http_request  := UTL_HTTP.BEGIN_REQUEST(url_chr);
  UTL_HTTP.SET_AUTHENTICATION(r => l_http_request, username => user_id_chr, PASSWORD => password_chr);
  l_http_response := UTL_HTTP.GET_RESPONSE(l_http_request);

  DBMS_OUTPUT.PUT_LINE ('STATUS_CODE : ' || l_http_response.STATUS_CODE);

  BEGIN
    LOOP
      UTL_HTTP.READ_TEXT(l_http_response, l_text, 32766);
      DBMS_OUTPUT.PUT_LINE (l_text);
    END LOOP;
  EXCEPTION
    WHEN UTL_HTTP.END_OF_BODY THEN
      UTL_HTTP.END_RESPONSE(l_http_response);
  END;
EXCEPTION
  WHEN OTHERS THEN

    DBMS_OUTPUT.PUT_LINE('EXCEPTION: '||SQLERRM);
    DBMS_OUTPUT.PUT_LINE('EXCEPTION: '||DBMS_UTILITY.FORMAT_ERROR_BACKTRACE);

    DBMS_OUTPUT.PUT_LINE('EXCEPTION: '||UTL_HTTP.GET_DETAILED_SQLERRM);
    UTL_HTTP.END_RESPONSE(l_http_response);
END;

我们已将提供的证书安装到 Oracle Wallet 中，我们对不同的客户端使用相同的代码没有问题.