opening tables, 1736 Opening master dump table thread state, 1857 Opening mysql.ndb_apply_status thread state, 1857 Opening system tables thread state, 1850 Opening tables thread state, 1850 OpenLDAP configuration ldap.conf file, 1338 opens, 452 OpenSSL, 214, 1280 FIPS mode, 1607 OpenSSL FIPS Object Module, 1607 Open_files status variable, 962 open_files_limit system variable, 847 Open_streams status variable, 962 Open_tables status variable, 962 Open_table_definitions status variable, 962 operating systems file-size limits, 1741 supported, 96, 96 operations arithmetic, 2139 operations_per_fragment ndbinfo table, 4567 operators, 2094 arithmetic, 2258 assignment, 1912, 2133 bit, 2258 cast, 2138, 2230 logical, 2131 precedence, 2124 string, 2171 string comparison, 2186 .OPT file, 6172 opt option mysqldump, 497 optimistic, 6173 optimization, 1638, 1706, 1751 Batched Key Access, 1671, 1673 benchmarking, 1841 BLOB types, 1735 Block Nested-Loop, 1671, 1673 character and string types, 1735 common table expressions, 1694 data change statements, 1712 data size, 1733 DELETE statements, 1714 derived tables, 1694 disk I/O, 1831 foreign keys, 1717 5497