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Added constraint site_nodes_parent_id_ck to table "site_nodes" to avoid certain simple loops on parent_ids

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improve spelling

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imporve spelling

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merged changes from the oacs-5-9 branch and resolved conflicts

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Fix issue #3300 and #3301: index name breaks Oracle name length limit of 30 chars

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Merging back to HEAD all changes that happened in branch oacs-5-8 between tags: vg-merge-oacs-5-8-from-20141027 and vg-merge-oacs-5-8-from-20150427

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- add missing indices

- bump version number to 5.8.3d2

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On my previous commit I added a not null constraint for name column on site_nodes, the problem is that main site node on oracle has a NULL name ( given the fact that empty strings are managed as NULL on Oracle ) therefore doesnt make sense to have such constraint.

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- Avoiding usage of coalesce function on site_nodes table columns in WHERE clause, this was leading to usage of sequencial scans which can be expensive when having a huge amount of site_nodes. Instead we go for isolation of the case when requestion a node with a null parent ( this would be the main site node ) and we use the = operator so the planner goes for a index scan.

- Adding not null constraint to site_nodes(name)

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Remerge Timo's changes for tip 42,43, cf tip 53

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rollback of Timo's name, package_id commit; see TIP 53

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TIP#42,43: adding package_id and title to acs_objects table

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Oracle9i porting changes

- Changed procedure names from delete to del

- Changed view declaration to use actual column names

- Changed "rel_constraints_violated_one" and "rel_constraints_violated_two"


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added site_nodes_parent_id_idx based on results from scalability testing

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bootstrapper can now load either the Oracle or PostgreSQL acs-kernel

datamodel. It checks on-the-fly for which db is configured in the OpenNSD

database pools allocated to OpenACS. Only acs-kernel is correctly self-

configured at this point.

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