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The following Oracle error is being encountered:
"err-1000: maximum open cursors exceeded when performing an ArcGIS operation."
To improve performance, ArcSDE 9 holds open numerous cursors within Oracle. Holding a cursor open can prevent the query from being parsed upon each execution and improves the overall scalability of the system.
A session is limited to a maximum number of concurrent open cursors by the Oracle initialization parameter open_cursors. The parameter's default value is 300, but based upon the complexity of the organizations data model, for example, the number of feature classes, the ArcSDE session can require a large number of cursors to be open.
If the session attempts to open a new cursor, but already has the maximum number of cursors open, the Oracle error err-1000 is raised.
Increase the Oracle initialization parameter open_cursors. The database administrator can increase the value in increments of 50 or 100.
If the value for open_cursors is set to a large value and the error persists, report the problem to ESRI Support Services and provide the steps to reproduce the problem.