Issue #1544: [ObjectDB 2.5.6_05] Unexpected exception (Error 990)

The server is still working, but I have this error in the log.

[2014-08-24 02:49:32 #33 server]
[ObjectDB 2.5.6_05] Unexpected exception (Error 990)
  Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_25 (on Windows 2003 5.2).
Please report this error on http://www.objectdb.com/database/issue/new
com.objectdb.o.InternalException: java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
at com.objectdb.o.PAG.<init>(PAG.java:175)
at com.objectdb.o.PGC.x(PGC.java:277)
at com.objectdb.o.SSS.Y(SSS.java:493)
at com.objectdb.o.SSS.Z(SSS.java:507)
at com.objectdb.o.PGW.ai(PGW.java:127)
at com.objectdb.o.UPT.C(UPT.java:134)
at com.objectdb.o.UPT.l(UPT.java:110)
at com.objectdb.o.TSK.i(TSK.java:145)
at com.objectdb.o.TSK.f(TSK.java:95)
at com.objectdb.o.UPT.s(UPT.java:157)
at com.objectdb.o.PGT.q(PGT.java:109)
at com.objectdb.o.UPT.C(UPT.java:121)
at com.objectdb.o.UPT.l(UPT.java:110)
at com.objectdb.o.TSK.i(TSK.java:145)
at com.objectdb.o.TSK.f(TSK.java:95)
at com.objectdb.o.UPT.s(UPT.java:157)
at com.objectdb.o.PGT.q(PGT.java:109)
at com.objectdb.o.UPT.C(UPT.java:121)
at com.objectdb.o.UPT.l(UPT.java:110)
at com.objectdb.o.TSK.i(TSK.java:145)
at com.objectdb.o.TSK.f(TSK.java:95)
at com.objectdb.o.UPT.s(UPT.java:157)
at com.objectdb.o.PGT.q(PGT.java:109)
at com.objectdb.o.UPT.C(UPT.java:121)
at com.objectdb.o.URT.l(URT.java:171)
at com.objectdb.o.TSK.i(TSK.java:145)
at com.objectdb.o.TSK.f(TSK.java:95)
at com.objectdb.o.TSM.e(TSM.java:86)
at com.objectdb.o.UTT.A(UTT.java:365)
at com.objectdb.o.UTT.l(UTT.java:203)
at com.objectdb.o.TSK.i(TSK.java:145)
at com.objectdb.o.TSK.f(TSK.java:95)

[2014-08-24 02:49:35 #34 server]
[ObjectDB 2.5.6_05] Unexpected exception (Error 990)
  Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_25 (on Windows 2003 5.2).
Please report this error on http://www.objectdb.com/database/issue/new
com.objectdb.o.InternalException: java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded

[2014-08-24 02:49:35 #35 server]
[ObjectDB 2.5.6_05] Unexpected exception (Error 990)
  Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_25 (on Windows 2003 5.2).
Please report this error on http://www.objectdb.com/database/issue/new
com.objectdb.o.InternalException: java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded

[2014-08-24 02:49:36 #36 server]
[ObjectDB 2.5.6_05] Unexpected exception (Error 990)
  Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_25 (on Windows 2003 5.2).
Please report this error on http://www.objectdb.com/database/issue/new
com.objectdb.o.InternalException: java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded

Thank you for your report. The stack trace includes an automatic request to report the error, but actually an OutOfMemoryError usually represents a normal situation in which ObjectDB does not have enough heap space.

Please try to increase the size of the JVM heap or change the configuration to use less heap size.