improved sql parser.

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/stmt/OracleCreateTableStatement.java

@@ -58,8 +58,9 @@ public class OracleCreateTableStatement extends SQLCreateTableStatement implemen
     private Boolean                 compress;
     private Integer                 compressLevel;
     private boolean                 compressForOltp;
-    private boolean                 onCommit;
-    private boolean                 preserveRows;
+
+    private boolean                 onCommitPreserveRows;
+    private boolean                 onCommitDeleteRows;
 
     private Boolean                 cache;
 
@@ -114,20 +115,20 @@ public class OracleCreateTableStatement extends SQLCreateTableStatement implemen
         this.cache = cache;
     }
 
-    public boolean isOnCommit() {
-        return onCommit;
+    public boolean isOnCommitPreserveRows() {
+        return onCommitPreserveRows;
     }
 
-    public void setOnCommit(boolean onCommit) {
-        this.onCommit = onCommit;
+    public void setOnCommitPreserveRows(boolean onCommitPreserveRows) {
+        this.onCommitPreserveRows = onCommitPreserveRows;
     }
 
-    public boolean isPreserveRows() {
-        return preserveRows;
+    public boolean isOnCommitDeleteRows() {
+        return onCommitDeleteRows;
     }
 
-    public void setPreserveRows(boolean preserveRows) {
-        this.preserveRows = preserveRows;
+    public void setOnCommitDeleteRows(boolean onCommitDeleteRows) {
+        this.onCommitDeleteRows = onCommitDeleteRows;
     }
 
     public Boolean getLogging() {

src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/stmt/OracleSetTransactionStatement.java

@@ -24,6 +24,7 @@ import com.alibaba.druid.sql.dialect.sqlserver.visitor.SQLServerASTVisitor;
 public class OracleSetTransactionStatement extends OracleStatementImpl implements OracleStatement {
 
     private boolean readOnly = false;
+    private boolean write = false;
 
     private SQLExpr name;
 
@@ -51,4 +52,11 @@ public class OracleSetTransactionStatement extends OracleStatementImpl implement
         this.readOnly = readOnly;
     }
 
+    public boolean isWrite() {
+        return write;
+    }
+
+    public void setWrite(boolean write) {
+        this.write = write;
+    }
 }

src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleCreateTableParser.java

@@ -124,12 +124,16 @@ public class OracleCreateTableParser extends SQLCreateTableParser {
             } else if (lexer.token() == Token.ON) {
                 lexer.nextToken();
                 accept(Token.COMMIT);
-                stmt.setOnCommit(true);
-                continue;
-            } else if (identifierEquals("PRESERVE")) {
-                lexer.nextToken();
-                acceptIdentifier("ROWS");
-                stmt.setPreserveRows(true);
+
+                if (identifierEquals("PRESERVE")) {
+                    lexer.nextToken();
+                    acceptIdentifier("ROWS");
+                    stmt.setOnCommitPreserveRows(true);
+                } else {
+                    accept(Token.DELETE);
+                    acceptIdentifier("ROWS");
+                    stmt.setOnCommitDeleteRows(true);
+                }
                 continue;
             } else if (identifierEquals("STORAGE")) {
                 OracleStorageClause storage = ((OracleExprParser) this.exprParser).parseStorage();

src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleStatementParser.java

@@ -995,13 +995,22 @@ public class OracleStatementParser extends SQLStatementParser {
 
             if (identifierEquals("READ")) {
                 lexer.nextToken();
-                acceptIdentifier("ONLY");
-                stmt.setReadOnly(true);
+
+                if (identifierEquals("ONLY")) {
+                    lexer.nextToken();
+                    stmt.setReadOnly(true);
+                } else {
+                    acceptIdentifier("WRITE");
+                    stmt.setWrite(true);
+                }
             }
 
-            acceptIdentifier("NAME");
+            if (identifierEquals("NAME")) {
+                lexer.nextToken();
+
+                stmt.setName(this.exprParser.expr());
+            }
 
-            stmt.setName(this.exprParser.expr());
             return stmt;
         }
 

src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java

@@ -1503,11 +1503,16 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
     @Override
     public boolean visit(OracleSetTransactionStatement x) {
         if (x.isReadOnly()) {
-            print0(ucase ? "SET TRANSACTION READ ONLY NAME " : "set transaction read only name ");
+            print0(ucase ? "SET TRANSACTION READ ONLY" : "set transaction read only");
         } else {
-            print0(ucase ? "SET TRANSACTION NAME " : "set transaction name ");
+            print0(ucase ? "SET TRANSACTION" : "set transaction");
+        }
+
+        SQLExpr name = x.getName();
+        if (name != null) {
+            print0(ucase ? " NAME " : " name ");
+            name.accept(this);
         }
-        x.getName().accept(this);
         return false;
     }
 
@@ -2127,14 +2132,12 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
             x.getLobStorage().accept(this);
         }
 
-        if (x.isOnCommit()) {
+        if (x.isOnCommitPreserveRows()) {
             println();
-            print0(ucase ? "ON COMMIT" : "on commit");
-        }
-
-        if (x.isPreserveRows()) {
+            print0(ucase ? "ON COMMIT PRESERVE ROWS" : "on commit preserve rows");
+        } else if (x.isOnCommitDeleteRows()) {
             println();
-            print0(ucase ? "PRESERVE ROWS" : "preserve rows");
+            print0(ucase ? "ON COMMIT DELETE ROWS" : "on commit delete rows");
         }
 
         if (x.isMonitoring()) {