Updating xml clob in oracle

That’s because it can actually validate the optimizer’s original estimates by running various steps in a given plan and comparing the actual results to the estimates.

When it’s all done, if it has found a better plan, it offers to implement that new plan via a SQL Profile.

Refer to the " Oracle Class Libraries" section in this document for information on the C class libraries provided in this release.

Tom Kyte say how get varchar2 from clob in SQL or PL/SQL code

Since it is allowed as much time as it wants to do it’s analysis, the advisor can sometimes find better approaches.

Those offered Profiles often have a lightly documented hint (OPT_ESTIMATE) that allows it to scale the optimizer estimates for various operations – essentially it’s a fudge factor.

The problem with this hint is that, far from locking a plan in place, it is locking an empirically derived fudge factor in place.

This release is a 32-bit version of Oracle Objects for OLE and will work on Windows NT, Windows 2000 and Windows 98.

Class libraries are provided for Microsoft Visual C versions 6.x.