A schema upgrade is not currently allowed

Error constant SQLE_SCHEMA_UPGRADE_NOT_ALLOWED
ODBC 2 State ERROR
ODBC 3 State ERROR
Severity 16
SQLCODE –953
SQLSTATE WW033
Sybase error code 13535
Probable cause

A schema upgrade cannot proceed because of concurrent use of the database. For example, all cursors must be closed before a schema upgrade can occur.