To enable JCR working properly with Sybase, a property 'check-sns-new-connection' with 'false' value is required for each workspace data container:

<container class="org.exoplatform.services.jcr.impl.storage.jdbc.optimisation.CQJDBCWorkspaceDataContainer">

  <properties>

    <property name="source-name" value="jdbcjcr" />

    <property name="dialect" value="auto" />

    <property name="multi-db" value="true" />

    <property name="update-storage" value="false" />

    <property name="max-buffer-size" value="200k" />

    <property name="swap-directory" value="target/temp/swap/ws" />

    <property name="swap-directory" value="target/temp/swap/ws" />

    <property name="check-sns-new-connection" value="false" />

  </properties>