ORALCE數據庫在使用PL/SQL鏈接時遇到的怪現象

現象以下：

數據庫裏只有一張表，在遠程鏈接使用命令行時用以下命令：

select * from user_info;徹底沒有問題，但在使用PL/SQL使用時就和死機同樣，徹底沒有反應。根據我部維保公司一名資深工程師的建議，我馬上查閱相關資料從下午五點至深夜兩點半，根據我部使用JUNIPER防火牆的因素，查閱JUNIPER相關資料：

sqlnet protocol and Oracle 10 problems

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?02-09-201005:36 AM

Has anyone had any luck on an SRX240 running JunOS 9.6 with sqlnet or oracle 10 databases running through it.

This has been worked on for quite some time on the DB side and they are finally pointing the finger at the firewalls. So we started looking at this today.

The only thing they could give us from the DB traces was that packets seem to be dropping randomly and Oracle claims not to many firewalls handle the sqlnet protocol well.

Is there an ALG for this in JunOS 9.6.

Also this is running through a Netscreen 208 that may be the cause as well. The app server is in our DMZ and connects to the Databases on our PCI vlan which has an SRX 240 in front of it to keep it segragated fomr the rest of the network for compliance issues. The DMZ firewalls are Netscreen 208a. Getting replaced later this year with SRX650. But we have to get this DB working now.

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etaftm

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Registered: ?11-22-2009

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Re: sqlnet protocol and Oracle 10 problems

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?02-10-201007:16 PM

We had the same problem with our oracle server. The Juniper tech advised us to turn off the SQL ALG

set security alg sql disable

 

仔細閱讀相關文檔：

在 JUNIPER JUNOS 6.1如下版本使用：set alg sql disable;

在 JUNIPER JUNOS 6.2,6.3版本使用：unset alg sql enable;

今天 下午驗證後遠程使用PL/SQL鏈接查詢此表正常。

 

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