JDBC Developer's Guide - Supra - Cincom

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JDBC and multi-threadingThe Cincom ORDB JDBC driver provides support for programs that use multiplethreads.The following files show a simple multithreaded Cincom ORDB JDBC applicationand can be found in the %ORDB%\demo\jdbc\samples directory:♦ threadSample.java♦♦sqlExecuteThread.javasqlResultsThread.javaJDBC Developer's Guide, P25-9504-03 Page 86Chapter: 6. Coding tips and troubleshootingSection: JDBC and multi-threading
Performance optimizationThe following are performance considerations for your Cincom ORDB JDBCapplication:♦ Disable auto-commit mode♦♦♦♦♦The array interfaceAutomatic custom mappingConnection poolingTrapping exceptionsSchema locksDisabling auto-commit modeAuto-commit mode indicates to the database whether to issue a commit afterevery SQL statement, after every Cincom ORDB JDBC Extension that updates adatabase instance or collection, and after every database method invocation.By default, new connection objects are in auto-commit mode. You can controlthe auto-commit mode for a connection with the setAutoCommit() method ofthe java.sql.Connection interface.You can also control the default auto-commit mode for new connections byusing the setAutoCommitDefault() static method of theordbjava.jdbc.ordbDriver class.Commits are expensive operations, and they cause all ResultSets to discardtheir current position.If auto-commit is disabled (recommended), then the JDBC driver groups theconnection’s SQL statements, and other database modifications into atransactions that is terminated by either a commit( ) or rollback( ) statement.JDBC Developer's Guide, P25-9504-03 Page 87Chapter: 6. Coding tips and troubleshootingSection: Performance optimization
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SQL ACCESS FOR SUPRASERVER PDM ®JD
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Contents1. Overview ...............
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6. Coding tips and troubleshooting
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What is JDBC?JDBC (Java Database Co
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Cincom ORDB extensions to the JDBC
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Checking installed directories and
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Testing JDBC and the database conne
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System.out.println ("Please enter i
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3. Basic FeaturesIntroductionThis c
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Step 2: Open a connection to a data
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Step 5: Process the ResultSet objec
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Cincom ORDB JDBC extension typesAlt
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4. Cincom ORDB ExtensionsIntroducti
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Class ordbGloThe ordbjava.jdbc.ordb
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prepare a statement that has an inp
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get the first resort referenceordbj
Page 36 and 37: Invoking database methodsYou can us
Page 38 and 39: Creating custom Java classes for Ci
Page 40 and 41: Annotated examples of custom mapped
Page 42 and 43: The above constructor can be used b
Page 44 and 45: class jaccommodations.javaThe follo
Page 46 and 47: public void readSQL(SQLInput stream
Page 48 and 49: Relating Java classes to database c
Page 50 and 51: Controlling when custom mapping occ
Page 52 and 53: Using the getAttributes method of t
Page 54 and 55: 13 activities// 14 sounds_of_the_ca
Page 56 and 57: }Statement stmt = conn.createStatem
Page 58 and 59: In the previous example, the applic
Page 60 and 61: ♦writeSQL() method. You must impl
Page 62 and 63: Retrieving a collection and its ele
Page 64 and 65: while (rset.next()) {// activities
Page 66 and 67: ordbCollection rooms = null;while (
Page 68 and 69: public static void main (String arg
Page 70 and 71: insertValue(Object javaObj, int JDB
Page 72 and 73: Example using the Array as input pa
Page 74 and 75: create a new collection of seashore
Page 76 and 77: 5. Cincom ORDB JDBC NotesIntroducti
Page 78 and 79: ConnectionThe database does not sup
Page 80 and 81: PreparedStatementCincom ORDB JDBC D
Page 82 and 83: Cincom ORDB JDBC Driver does not su
Page 84 and 85: SQLOutputThe Cincom ORDB JDBC Drive
Page 88 and 89: Example: Disabling AutoCommit. The
Page 90 and 91: setConnectPoolTimeout(long millisec
Page 92 and 93: Logging JDBC callsThe Cincom ORDB J
Page 94 and 95: Accessing JDBC samplesUse one of th
Page 96 and 97: IndexAaccesing attribute values,exa
Page 98: RResultSet objectclosing 23processi
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JDBC Developer's Guide - Supra - Cincom

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