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| <title>18. Sybase Adaptive Server</title><link rel="stylesheet" href="css/docbook.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.72.0"><link rel="start" href="manual.html" title="Apache OpenJPA 1.2 User's Guide"><link rel="up" href="supported_databases.html" title="Appendix 2. Supported Databases"><link rel="prev" href="dbsupport_postgresql.html" title="17. PostgreSQL"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">18. |
| Sybase Adaptive Server |
| </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="dbsupport_postgresql.html">Prev</a> </td><th width="60%" align="center">Appendix 2. |
| Supported Databases |
| </th><td width="20%" align="right"> </td></tr></table><hr></div><div class="section" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="dbsupport_sybase"></a>18. |
| Sybase Adaptive Server |
| </h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="dbsupport_sybase.html#dbsupport_sybase_issues">18.1. |
| Known issues with Sybase |
| </a></span></dt></dl></div><div class="example"><a name="example_props_sybase"></a><p class="title"><b>Example 2.19. |
| Example properties for Sybase |
| </b></p><div class="example-contents"><pre class="programlisting"> |
| openjpa.ConnectionDriverName: com.sybase.jdbc2.jdbc.SybDriver |
| openjpa.ConnectionURL: \ |
| jdbc:sybase:Tds:SERVER_NAME:4100/DB_NAME?ServiceName=DB_NAME&BE_AS_JDBC_COMPLIANT_AS_POSSIBLE=true |
| </pre></div></div><br class="example-break"><div class="section" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="dbsupport_sybase_issues"></a>18.1. |
| Known issues with Sybase |
| </h3></div></div></div><div class="itemizedlist"><ul type="disc"><li><p> |
| The "<code class="literal">DYNAMIC_PREPARE</code>" parameter of the Sybase JDBC driver |
| cannot be used with OpenJPA. |
| </p></li><li><p> |
| Datastore locking cannot be used when manipulating many-to-many relations using |
| the default OpenJPA schema created by the schematool, unless an auto-increment |
| primary key field is manually added to the table. |
| </p></li><li><p> |
| Persisting a zero-length string results in a string with a single space |
| characted being returned from Sybase, Inc.'s JDBC driver. |
| </p></li><li><p> |
| The <code class="literal">BE_AS_JDBC_COMPLIANT_AS_POSSIBLE</code> is required in order to |
| use datastore (pessimistic) locking. Failure to set this property may lead to |
| obscure errors like " <code class="literal">FOR UPDATE can not be used in a SELECT which is |
| not part of the declaration of a cursor or which is not inside a stored |
| procedure.</code> ". |
| </p></li><li><p> |
| Applications performing update/insert data of the BigDecimal java type may fail |
| with OptimisticException if the data exceeds the scale or precision of the |
| column on Sybase. To avoid this problem, applications can specify the precision |
| and scale for the numeric type by setting numericTypeName='NUMERIC(p,s)' for |
| the column type mapped by the BigDecimal java type. See |
| <a href="ref_guide_conf_jdbc.html#openjpa.jdbc.DBDictionary" title="6.2. openjpa.jdbc.DBDictionary">openjpa.jdbc.DBDictionary</a> for |
| more detail. Alternatively, application can set the precision and scale using |
| the standard <code class="classname">Column</code> annotation, described in |
| <a href="jpa_overview_mapping_column.html" title="3. Column">Section 3, “ |
| Column |
| ”</a>. |
| </p></li></ul></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="dbsupport_postgresql.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="supported_databases.html">Up</a></td><td width="40%" align="right"> </td></tr><tr><td width="40%" align="left" valign="top">17. |
| PostgreSQL |
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