Navigator is very slow to populate with a package that has over 10,000 rows (4235892)

Navigator is very slow to populate with a package that has over 10,000 rows

The Navigator is very slow to populate when opening a large package in version 12.12. It seems to be related to Code Analysis.
To reproduce the problem you need a very large package (about 10000 lines) which includes a huge amount of variable declarations in various procedures, e.g. of type PLS_INTEGER and an 11.2 database.



The steps to reproduce the problem are:

•    Go to View | Toad options | Code Analysis and, on the right panel, make sure “Check rules as you type" is checked
•    Go to View | Toad options | Code Analysis and, on the right panel, select as “Default Rule Set”  All Rules
•    Apply and click OK
•    Compile the package
•    Open the Schema Browser, go to Packages and double click the package
•    Once the package is opened, check the Navigator Window and time how long it takes to load. It takes around 40 seconds, while in 12.11 it just takes about 5 seconds. In the latest beta it also takes 40 seconds.
•    If you go back to options, select as “Default Rule Set”  top 20 and reopen the package , you will see that it takes about 5 seconds.

It was found in investigations that the rule that seems to affect this is 2128, but is not reproducible.