PLS-00907

Question

We're getting an intermittent PLS-00907 error in one of our applications and I've been assigned to track down the cause.
The Oracle version is 10.2.0.2 and the error text is
PLS-00907: cannot load library unit SCHEMA_NAME.TABLE_NAME (referenced by SCHEMA_NAME.PACKAGE_NAME)
All the references to this error I have found either had to do with compiling a package or the library unit named was either a package or procedure.
In this case the library unit named is a table and when I find the error in our log file, I can see that the application had previously successfully completed the same operation about an hour earlier and if I query the LAST_DDL_TIME from DBA_OBJECTS for the table, the package, and the package body, all three are earlier than the time when the application had successfully completed the task.
It has been our observation that once the error occurs once, it will happen intermittantly every four to six hours until we have the DBA flush the shared pool. After flushing the shared pool the problem goes away for about a week.
Does anyone have any ideas where I should start looking?
Edit: Another bit of information: The first non-comment line in the package source is a variable declaration :
variable_name    TABLE_NAME.column_name%TYPE;Where "TABLE_NAME" is the same table name as in the error message.
Edited by: kendenny on Sep 28, 2009 1:13 PM

Answer 1

Try below solution.
Cause
Issue is caused by sequencing problem during the application of the patch
as discussed in bug 945478
Solution
To implement the solution, please execute the following steps:
1. Recompile the failing package:
for ex:-
alter package ABC_PACK compile;
alter package ABC_PACK compile body;
2. Restart the failed worker
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