[TNS-12560: Protocol Adapter Error] after every 48 Hours

Question

Dear All,
Our company encountered a very strange Oracle database issue, here is the details:
Environment
1. Dell 2950 Server with Windows Server 2003, Oracle 9i 9.2.0.1 and WebLogic Platform Server 8.1 SP3 installed;
2. Two databases on the Oracle, one is called FAX and it is a schema located in the original DB database; another one is called EIP, it is a new database created by IT staff;
3. Two applications installed on this server, the first one is a Visual C++ developed Avaya Call Routing system (BCCS), this system will query data from the EIP database; Another one is a WebLogic and JAVA based system (EIP), users access this system by using IE at client computer and this system also uses the EIP database;
4. We have a standalone fax-out server with faxboard installed and used to send fax, this server uses the FAX database;
Issue
1. Before Jun.6, everything is OK;
2. At Jun.6 night, we installed two new applications on two new server, these applications will read and write data to the EIP database via network;
3. Jun.9 12:30, we found the BCCS cannot connect to the database, error message is [TNS-12560: Protocol Adapter Error], we checked and found all Oracle's services are running properly including the TNSListener;
4. We reboot the server and then everything is OK;
5. Jun.12 10:41, Jun.14 12:46 and Jun.16 20:51, same issue occurred again, we simply reboot the server and everything is OK
It is very interesting that we found the issue always occur after 48~55 hours we reboot the server, but cannot find more useful information; there is also no failed information in the Oracle alert log.
Please share some ideas with me, thanks a lot.

Answer 1

Thanks for reply. Answer to your questions:
1. This issue occurs on application which were installed on the computer with Oracle installed, and there is no firewall on this computer, so I believe that it is not related network.
2. Please let me know how to check the error stack and turn on tracing.
3. ORA file info:
# TNSNAMES.ORA Network Configuration File: D:\oracle\ora92\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
EIP.MISUMIPM.COM =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.6.24)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = EIP)
INST1_HTTP =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ctiapp)(PORT = 1521))
(CONNECT_DATA =
(SERVER = SHARED)
(SERVICE_NAME = MODOSE)
(PRESENTATION = http://HRService)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
DB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ctiapp)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = DB)
Hope helps.