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HHH-18946 Fix startup issues with HANA in failover situations #10212

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merged 1 commit into from
May 28, 2025
Merged

HHH-18946 Fix startup issues with HANA in failover situations #10212

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31 changes: 22 additions & 9 deletions hibernate-core/src/main/java/org/hibernate/dialect/HANAServerConfiguration.java
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Original file line number Diff line number Diff line change
Expand Up @@ -50,21 +50,34 @@ public static HANAServerConfiguration fromDialectResolutionInfo(DialectResolutio
Integer maxLobPrefetchSize = null;
final DatabaseMetaData databaseMetaData = info.getDatabaseMetadata();
if ( databaseMetaData != null ) {
try (final Statement statement = databaseMetaData.getConnection().createStatement()) {
try ( ResultSet rs = statement.executeQuery(
"SELECT TOP 1 VALUE,MAP(LAYER_NAME,'DEFAULT',1,'SYSTEM',2,'DATABASE',3,4) AS LAYER FROM SYS.M_INIFILE_CONTENTS WHERE FILE_NAME='indexserver.ini' AND SECTION='session' AND KEY='max_lob_prefetch_size' ORDER BY LAYER DESC" ) ) {
// This only works if the current user has the privilege INIFILE ADMIN
if ( rs.next() ) {
maxLobPrefetchSize = rs.getInt( 1 );
}
}
int databaseMajorVersion = -1;
try {
databaseMajorVersion = databaseMetaData.getDatabaseMajorVersion();
}
catch (SQLException e) {
// Ignore
LOG.debug(
"An error occurred while trying to determine the value of the HANA parameter indexserver.ini / session / max_lob_prefetch_size.",
"An error occurred while trying to determine the database version.",
e );
}

if (databaseMajorVersion > 0 && databaseMajorVersion < 4) {
try (final Statement statement = databaseMetaData.getConnection().createStatement()) {
try ( ResultSet rs = statement.executeQuery(
"SELECT TOP 1 VALUE,MAP(LAYER_NAME,'DEFAULT',1,'SYSTEM',2,'DATABASE',3,4) AS LAYER FROM SYS.M_CONFIGURATION_PARAMETER_VALUES WHERE FILE_NAME='indexserver.ini' AND SECTION='session' AND KEY='max_lob_prefetch_size' ORDER BY LAYER DESC" ) ) {
// This only works if the current user has the privilege INIFILE ADMIN
if ( rs.next() ) {
maxLobPrefetchSize = rs.getInt( 1 );
}
}
}
catch (SQLException e) {
// Ignore
LOG.debug(
"An error occurred while trying to determine the value of the HANA parameter indexserver.ini / session / max_lob_prefetch_size.",
e );
}
}
}
// default to the dialect-specific configuration settings
if ( maxLobPrefetchSize == null ) {
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