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Computerworld - Oracle Corp. issues dozens of security patches every quarter, but that doesn't mean database administrators are necessarily implementing them.

In fact, a good two-thirds of all Oracle DBAs appear not to be installing Oracle's security patches at all, no matter how critical the vulnerabilities may be, according to survey results from Sentrigo Inc., a Woburn, Mass.-based vendor of database security products.

The results are "surprising, and to be candid, quite frightening," said Mike Rothman, president of consulting firm Security Incite in Atlanta.

Sentrigo polled 305 Oracle database administrators from 14 Oracle user groups between August 2007 and January 2008. The company basically asked the administrators two questions: whether they had installed the latest Oracle patches, and whether they had ever installed any of Oracle's security updates.

The results, which come even as Oracle is scheduled to release its next batch of quarterly Critical Patch Updates tomorrow, showed that 206 out of the 305 surveyed said they had never applied any Oracle CPUs. Just 31 said they had installed the most recent security update from the company. In total, only one-third said they had ever installed an Oracle CPU.

In an e-mailed statement, Oracle said the company "encourages organizations [to] apply Critical Patch Updates in a timely fashion to maintain their security posture."

"Critical Patch Updates for the Oracle Database are cumulative for the patch set to which they apply, making it easier for customers to keep their systems current with the latest security patch updates," the company said.

The results support what Sentrigo has been hearing anecdotally for sometime, said Slavik Markovich, chief technology officer at Sentrigo. "Some database administrators don't even monitor for Oracle's CPUs. They don't even know when the CPUs come out," he said. "Sometimes, even if their security department tells them to deploy it, they just ignore it," he said.

There are two major reasons for the trend, Markovich said. The first and most important is that most DBAs fear the consequences of installing a patch on a running database, he said.

"To apply the CPU, you need to change the binaries of the database," he said. "You change the database behavior in some ways that may affect application performance," he said. So applying security patches to a database typically involves testing them against the applications that feed off the database, he said. "This is a very long and very hard process to do, especially if you are in enterprises with a large number of databases and applications," he said. Applying these patches means months of labor and sometimes significant downtime, both of which most companies can't afford, he said.