SQL from remote systems failes

Hi All,
First of all, it may not be a database issue.
In brief, Not able to execute sql statements which returns more amount of data for ex: select * from v$session,select * from dict; I Could execute simple statements like select * from version / some user tables with less number of data by using “where” clause.
This is not an issue when I am in a remote system which are located in the same network as the database server (North America). Issue is from my local system (Asia) alone. I am sure that it has something to do with network side.
C:\Documents and Settings>sqlplus system/******@XXXX
SQL*Plus: Release 11.1.0.6.0 - Production on Wed May 12 11:11:39 2010
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
SQL>
SQL> select * from v$session;
It just stops there. Session won’t disconnect or any ORA-XXXX error.
Done the following checks,
- v$session shows that the above session in question is in status as “INACTIVE” and state as “WAITING”
- tnsping from remote system and localsystem returns almost similar response time (600 msec - 670 msec)
- Couldn’t find anything unusual in alert / trace also in listener log.
- Since I am able to run some queries, no need to bother about firewall side.
- Done some basic analysis using wireshark packet analyzer - couldn’t see any error. However could see that local system is getting “response data” from the database server.
- MTU set to different size , 1500,1400,Defaul;t etc with no luck.
I am sure that many of you working on scattered environment might have faced similar issues. Your inputs will be very helpful for me.
Server – Oracle 11.2.0.1.0 64 on RHEL 5.4
Client - Oracle 11.1.0.6.0 on Xp. Tried with jdbc thin drivers also.
Thanks.

please refer below,
oracle@XXXXX$=>tail -100 alert_db1.log | more
Mon May 10 22:14:50 2010
Thread 1 advanced to log sequence 1947 (LGWR switch)
Current log# 3 seq# 1947 mem# 0: /data/oracle/oradata/db1/redo03.log
Tue May 11 01:31:48 2010
Thread 1 advanced to log sequence 1948 (LGWR switch)
Current log# 1 seq# 1948 mem# 0: /data/oracle/oradata/db1/redo01.log
Tue May 11 01:32:09 2010
Thread 1 advanced to log sequence 1949 (LGWR switch)
Current log# 2 seq# 1949 mem# 0: /data/oracle/oradata/db1/redo02.log
Thread 1 cannot allocate new log, sequence 1950
Checkpoint not complete
Current log# 2 seq# 1949 mem# 0: /data/oracle/oradata/db1/redo02.log
Tue May 11 01:32:28 2010
Thread 1 advanced to log sequence 1950 (LGWR switch)
Current log# 3 seq# 1950 mem# 0: /data/oracle/oradata/db1/redo03.log
Thread 1 cannot allocate new log, sequence 1951
Checkpoint not complete
Current log# 3 seq# 1950 mem# 0: /data/oracle/oradata/db1/redo03.log
Tue May 11 01:32:40 2010
Thread 1 advanced to log sequence 1951 (LGWR switch)
Current log# 1 seq# 1951 mem# 0: /data/oracle/oradata/db1/redo01.log
Thread 1 cannot allocate new log, sequence 1952
Checkpoint not complete
Current log# 1 seq# 1951 mem# 0: /data/oracle/oradata/db1/redo01.log
Thread 1 advanced to log sequence 1952 (LGWR switch)
Current log# 2 seq# 1952 mem# 0: /data/oracle/oradata/db1/redo02.log
Tue May 11 02:00:03 2010
Clearing Resource Manager plan via parameter
Tue May 11 02:01:03 2010
Thread 1 advanced to log sequence 1953 (LGWR switch)
Current log# 3 seq# 1953 mem# 0: /data/oracle/oradata/db1/redo03.log
Tue May 11 03:10:44 2010
Stopping background process CJQ0
Tue May 11 07:00:10 2010
Thread 1 advanced to log sequence 1954 (LGWR switch)
Current log# 1 seq# 1954 mem# 0: /data/oracle/oradata/db1/redo01.log
Tue May 11 13:37:35 2010
Thread 1 advanced to log sequence 1955 (LGWR switch)
Current log# 2 seq# 1955 mem# 0: /data/oracle/oradata/db1/redo02.log
Tue May 11 20:00:37 2010
Thread 1 advanced to log sequence 1956 (LGWR switch)
Current log# 3 seq# 1956 mem# 0: /data/oracle/oradata/db1/redo03.log
Tue May 11 21:30:45 2010
Starting background process CJQ0
Tue May 11 21:30:45 2010
CJQ0 started with pid=22, OS id=2034
Tue May 11 22:00:00 2010
Setting Resource Manager plan SCHEDULER[0x2FF5]:DEFAULT_MAINTENANCE_PLAN via scheduler window
Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter
Tue May 11 22:00:01 2010
Starting background process VKRM
Tue May 11 22:00:01 2010
VKRM started with pid=29, OS id=3328
Tue May 11 22:01:21 2010
Begin automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"
Tue May 11 22:04:22 2010
Thread 1 advanced to log sequence 1957 (LGWR switch)
Current log# 1 seq# 1957 mem# 0: /data/oracle/oradata/db1/redo01.log
Tue May 11 22:04:41 2010
End automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"
Tue May 11 22:06:29 2010
Thread 1 advanced to log sequence 1958 (LGWR switch)
Current log# 2 seq# 1958 mem# 0: /data/oracle/oradata/db1/redo02.log
Tue May 11 22:10:22 2010
Thread 1 cannot allocate new log, sequence 1959
Checkpoint not complete
Current log# 2 seq# 1958 mem# 0: /data/oracle/oradata/db1/redo02.log
Tue May 11 22:13:00 2010
Thread 1 advanced to log sequence 1959 (LGWR switch)
Current log# 3 seq# 1959 mem# 0: /data/oracle/oradata/db1/redo03.log
Tue May 11 22:15:58 2010
Thread 1 advanced to log sequence 1960 (LGWR switch)
Current log# 1 seq# 1960 mem# 0: /data/oracle/oradata/db1/redo01.log
Wed May 12 01:32:46 2010
Thread 1 advanced to log sequence 1961 (LGWR switch)
Current log# 2 seq# 1961 mem# 0: /data/oracle/oradata/db1/redo02.log
Thread 1 advanced to log sequence 1962 (LGWR switch)
Current log# 3 seq# 1962 mem# 0: /data/oracle/oradata/db1/redo03.log
Wed May 12 01:32:57 2010
Thread 1 cannot allocate new log, sequence 1963
Checkpoint not complete
Current log# 3 seq# 1962 mem# 0: /data/oracle/oradata/db1/redo03.log
Thread 1 advanced to log sequence 1963 (LGWR switch)
Current log# 1 seq# 1963 mem# 0: /data/oracle/oradata/db1/redo01.log
Thread 1 cannot allocate new log, sequence 1964
Checkpoint not complete
Current log# 1 seq# 1963 mem# 0: /data/oracle/oradata/db1/redo01.log
Wed May 12 01:33:11 2010
Thread 1 advanced to log sequence 1964 (LGWR switch)
Current log# 2 seq# 1964 mem# 0: /data/oracle/oradata/db1/redo02.log
Thread 1 cannot allocate new log, sequence 1965
Checkpoint not complete
Current log# 2 seq# 1964 mem# 0: /data/oracle/oradata/db1/redo02.log
Thread 1 advanced to log sequence 1965 (LGWR switch)
Current log# 3 seq# 1965 mem# 0: /data/oracle/oradata/db1/redo03.log
Wed May 12 02:00:00 2010
Clearing Resource Manager plan via parameter
Wed May 12 02:00:55 2010
Thread 1 advanced to log sequence 1966 (LGWR switch)
Current log# 1 seq# 1966 mem# 0: /data/oracle/oradata/db1/redo01.log

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Thanks for your help.

There is a chapter in the Oracle Application Developer's Guide on calling external procedures
I don't know enough about VB and the available VB APIs to know for sure. I would assume that VB could be configured to generate a DLL with a C call specification. I would also assume that there was a VB API that would allow you to manipulate LONG RAW and BLOB data. Unfortunately, though, I don't know which VB API's have that functionality.
Justin

SQL from remote systems failes

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