6. Result Code Meanings  ... The update cannot proceed because any change to an R-Tree might involve reshuffling and rebalancing of nodes, which would disrupt read cursors, causing some rows to be repeated and other rows to be omitted. (520) SQLITE_READONLY_CANTLOCK The SQLITE_READONLY_CANTLOCK error ... 

3.3. Lookaside memory allocator  ... These small memory allocations are used to hold things such as the names of tables and columns, parse tree nodes, individual query results values, and B-Tree cursor objects. There are consequently many calls to malloc() and free() - so many ... 

 ... sqlite3changegroup_add(), sqlite3changegroup_add_change(), sqlite3changegroup_output() Changeset Iterator Handletypedef struct sqlite3_changeset_iter sqlite3_changeset_iter; An instance of this object acts as a cursor for iterating over the elements of a changeset or patchset. Constructors: sqlite3changeset_start(), sqlite3changeset_start_v2() sqlite3changeset_conflict sqlite3changeset_finalize sqlite3changeset_fk_conflicts sqlite3changeset_new sqlite3changeset_next sqlite3changeset_old sqlite3changeset_op sqlite3changeset_pk Rebasing ...