The phenomenon is as follows:
There is only one table in the database. When using the command line for remote connection , use the following command:
select * from user_info; has no problem at all, but when using PL/ SQL it is the same as crashing, no response at all. According to the suggestion of a senior engineer of our maintenance company, I immediately checked the relevant information from 5:00 p.m. to 2:30 in the middle of the night. According to the factors that our department uses the JUNIPER firewall, I checked the relevant JUNIPER information:
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
Read the relevant documentation carefully:
Use in versions below JUNIPER JUNOS 6.1: set alg sql disable;
Use in JUNIPER JUNOS 6.2,6.3 version: unset alg sql enable;
After verifying this afternoon, querying this table remotely using a PL/ SQL connection works fine.
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