SYSTEM_TOO_MANY_CLASSES is an ABAP runtime error which you may come across when using or developing within an SAP system. See below for the standard details explaining what it means and how you can avoid or fix this runtime error.
Short Dump Classification: O - Resource Shortage
You can view further information about a runtme error by using transaction code ST22 which will show you this and all runtime erros that have happen in your SAP system.
Also check out the Comments section below to view or add related contributions and example screen shots.
Prevent so many classes from being used within a program run.
Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.
Please see search hints for more details about the possible cause of this runtime error and how it could be avoided.
Please see send to sap for more details about the possible cause of this runtime error and how it could be avoided.
Maximum number of used classes exceeded.
Please see capacity error for more details about the possible cause of this runtime error and how it could be avoided.
More than <runtime parameter> classes were to be used in a program run. The maiximum
system-side upper limit is however <runtime parameter>.
Please see abap error for more details about the possible cause of this runtime error and how it could be avoided.
SYSTEM_TOO_MANY_CLASSES - system too many classes SYSTEM_SHM_READ_LOCK_ACTIVE - system shm read lock active SYSTEM_SHM_OPEN_CHANGE_LOCK - system shm open change lock SYSTEM_SHM_NO_ROLL - system shm no roll SYSTEM_SHM_DETACH_IN_CONSTR - system shm detach in constr SYSTEM_SHM_CHANGE_LOCK_ACTIVE - system shm change lock active